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Memoria final del proyecto titulado "Creación de material docente audiovisual mediante software libre con perspectiva de accesibilidad", cuyo acrónimo es AulaAccesible. Este proyecto busca dotar al alumnado de herramientas de creación de material audiovisual propio mediante la utilización de software libre prestando especial atención a colectivos con necesidades especiales auditivas o visuales.

We consider the phase shift in the gravitational wave signal induced by fast oscillations of scalar dark matter surrounding binary systems, which could be probed by the future experiments LISA and DECIGO. This effect depends on the local matter density and the mass of the dark matter particle. We compare it to the phase shift due to a standard dynamical friction term, which should generically be present. We find that the effect associated with the oscillations only dominates over the dynamical friction for dark matter masses below 10-21 eV, with masses below 10-23 eV implying cloud sizes that are too large to be realistic. Moreover, for masses of the order of 10-21 eV, LISA and DECIGO would only detect this effect for dark matter densities greater than that in the solar system by a factor 105 or 104 respectively. We conclude that this signal can be ignored for most dark matter scenarios unless very dense clouds of very light dark matter are created early in the Universe at a redshift z similar to 104., Ministerio de Ciencia e Innovación (España), European Commission, Université Paris-Saclay, P2IO Laboratory of Excellence, Agence Nationale de la Recherche (France), Science and Technology Facilities Council (UK), Depto. de Física Teórica, Fac. de Ciencias Físicas, Instituto de Física de Partículas y del Cosmos (IPARCOS), TRUE, pub, CA21106, CA21136, ANR-11-IDEX-0003-01, ANR-10-LABX-0038, ST/ T000732/1.

2023 Descuento SCOAP, We provide a reinterpretation of the quantum vacuum ambiguities that one encounters when studying particle creation phenomena due to an external and time-dependent agent. We propose a measurement-motivated understanding: Each way of measuring the number of created particles selects a particular vacuum. This point of view gives a clear and physical meaning to the time evolution of the number of particles produced by the agent as the counts in a specific detector and, at the same time, relates commonly used quantization prescriptions to particular measurement setups., Ministerio de Ciencia e Innovación (España), Agencia Estatal de Investigación (España), Fondo Europeo de Desarrollo Regional (FEDER), European Commission, European Cooperation in Science and Technology, Ministerio de Universidades (España), Centro de Excelencia Severo Ochoa (España), Depto. de Física Teórica, Fac. de Ciencias Físicas, Instituto de Física de Partículas y del Cosmos (IPARCOS), TRUE, pub, Descuento UCM

Este proyecto pretende fomentar las vocaciones en carreras universitarias de ciencia y tecnología de colectivos sociales especialmente infrarrepresentados en estas carreras. Estas disciplinas tienen en general, déficit de alumnos con respecto a otros grados de artes y humanidades, sin embargo, esta falta de vocaciones es más acentuada en clases sociales de menor nivel socioeconómico y en mujeres.

Este proyecto busca dotar a los estudiantes universitarios de las herramientas necesarias para poder crear y postproducir material audiovisual propio. En particular, fomenta la utilización de software libre que permita su utilización sin necesidad de realizar pago por licencia. De esta forma, se busca fomentar la autonomía e iniciativa del estudiante y sus posibilidades de colaboración con otros compañeros y el resto de actores académicos. También dota a su currículum de mayores posibilidades para la transferencia de su formación en entornos laborales fuera de la Universidad.

© 2023 The Authors. This work was supported by Grants FPU16/06960 (MECD), the MICINN (Spain) project PID2019-107394GB-I00/AEI/10.13039/501100011033 (AEI/FEDER, UE), and PID2019-108655GB-I00/AEI/10.13039/501100011033, UCM under research group 910309, IPAR-COS institute, and by EU STRONG-2020 under the program H2020-INFRAIA-2018-1 [grant no. 824093]. JARC acknowledges support by Institut Pascal at Universite Paris-Saclay during the Paris-Saclay Astroparticle Symposium 2022, with the support of the P2IO Laboratory of Excellence (program "Investissements d'avenir" ANR-11-IDEX-0003-01 Paris-Saclay and ANR-10-LABX-0038), the P2I axis of the Graduate School of Physics of Universite Paris-Saclay, as well as IJCLab, CEA, APPEC, IAS, OSUPS, and the IN2P3 master projet UCMN. Part of the contribution of JARC to this article is based upon work from COST Action COSMIC WISPers CA21106, supported by COST (European Cooper-ation in Science and Technology)., The Coleman-Weinberg mechanism provides a procedure by which a scalar field, which initially has no mass parameters, acquires a mass due to the anomalous nature of scale symmetry. Loop corrections trigger a spontaneous symmetry breaking and the appearance of a non-trivial vacuum. We first review the basic example of the Coleman-Weinberg mechanism, scalar Quantum Electrodynamics, in a perturbative regime where the scalar particle becomes massive through photon loops. We then present the main results of this article, what we name the gravitational Coleman-Weinberg mechanism: we analyse the same effect in a gravitational theory without explicit energy scales at tree-level. Finally, we also study the mechanism for two scalar fields in the mentioned gravitational theory. We will derive the gravitational Coleman-Weinberg potentials, analyse the parameter space where we have a symmetry breaking, and obtain the value of the corresponding scalar masses., Unión Europea. H2020, Ministerio de Ciencia e Innovación (MICINN)/FEDER, Ministerio de Ciencia e Innovación (MICINN), Ministerio de Educación y Ciencia (MEC), Agence nationale de la recherche (ANR)/Universidad París-Saclay, Universidad Complutense de Madrid, IJCLab, French Atomic Energy Commission (CEA), APPEC, IAS, OSUPS, IN2P3-UCMN, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

2023 Descuento SCOAP, We provide a reinterpretation of the quantum vacuum ambiguities that one encounters when studying particle creation phenomena due to an external and time-dependent agent. We propose a measurement-motivated understanding: Each way of measuring the number of created particles selects a particular vacuum. This point of view gives a clear and physical meaning to the time evolution of the number of particles produced by the agent as the counts in a specific detector and, at the same time, relates commonly used quantization prescriptions to particular measurement setups., Ministerio de Ciencia e Innovación (España), Agencia Estatal de Investigación (España), Fondo Europeo de Desarrollo Regional (FEDER), European Commission, European Cooperation in Science and Technology, Ministerio de Universidades (España), Centro de Excelencia Severo Ochoa (España), Depto. de Física Teórica, Fac. de Ciencias Físicas, Instituto de Física de Partículas y del Cosmos (IPARCOS), TRUE, pub, Descuento UCM

©2003 The American Physical Society, We consider a general brane-world model parametrized by the brane tension scale f and the branon mass M. For a low tension compared to the fundamental gravitational scale, we calculate the relic branon abundance and its contribution to the cosmological dark matter. We compare this result with the current observational limits on the total and hot dark matter energy densities and derive the corresponding bounds on f and M. Using the nucleosynthesis bounds on the number of relativistic species, we also set a limit on the number of light branons in terms of the brane tension. Finally, we estimate the bounds coming from the energy loss rate in supernovae explosions due to massive branon emission., Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2014 American Physical Society. This work has been supported by MICINN (Spain) Projects No. FIS2011-23000, No. FPA2011-27853-01 and Consolider-Ingenio MULTIDARK No. CSD2009- 00064. F. D. A. acknowledges financial support from the UAM+CSIC Campus of International Excellence (Spain) and the kind hospitality of the Instituto de Astrofísica de Canarias (IAC) while writing the manuscript., We consider the vacuum energy of massive quantum fields in an expanding universe. We define a conserved renormalized energy-momentum tensor by means of a comoving cutoff regularization. Using exact solutions for de Sitter space-time, we show that in a certain range of mass and renormalization scales there is a contribution to the vacuum energy density that scales as nonrelativistic matter and that such a contribution becomes dominant at late times. By means of the WKB approximation, we find that these results can be extended to arbitrary Robertson-Walker geometries. We study the range of parameters in which the vacuum energy density would be compatible with current limits on dark matter abundance. Finally, by calculating the vacuum energy in a perturbed Robertson-Walker background, we obtain the speed of sound of density perturbations and show that the vacuum energy density contrast can grow on sub-Hubble scales as in standard cold dark matter scenarios., MICINN (Spain), Consolider-Ingenio MULTIDARK, CSD2009- 00064, UAM+CSIC Campus of International Excellence (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2013 IOP Publishing Ltd and Sissa Medialab srl. We thank Alvaro de la Cruz-Dombriz for useful comments. This work has been supported by MICINN (Spain) project numbers FIS 2008-01323, FIS2011-23000, FPA2011-27853-01 and Consolider Ingenio MULTIDARK CSD2009-00064., We study the main spectral features of the gamma-ray fluxes observed by the High Energy Stereoscopic System (HESS) from the J1745-290 Galactic Center source during the years 2004, 2005 and 2006. In particular, we show that these data are well fitted as the secondary gamma-rays photons generated from dark matter annihilating into Standard Model particles in combination with a simple power law background. We present explicit analyses for annihilation in a single standard model particle-antiparticle pair. In this case, the best fits are obtained for the u (u) over bar and d (d) over bar quark channels and for the W+W- and ZZ gauge bosons, with background spectral index compatible with the Fermi-Large Area Telescope (LAT) data from the same region. The fits return a heavy WIMP, with a mass above similar to 10 TeV, but well below the unitarity limit for thermal relic annihilation., MICINN, Spain, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2008 IOP Publishing Ltd and SISSA. This work has been partially supported by the DGICYT (Spain) under projects FPA200402602, FPA2005-02327 and CAM/UCM 910309, by UCM-Santander PR34/07-15875 and by DOE grant DOE/DE-FG02-94ER40823., One of the most striking features found in the cosmic microwave background data is the presence of an anomalous cold spot (CS) in the temperature maps made by the Wilkinson Microwave Anisotropy Probe (WMAP). This CS has been interpreted as the result of the presence of a collapsing texture, perhaps coming from some early universe grand unified theory (GUT) phase transition. In this work we propose an alternative explanation based on a completely different kind of texture which appears in a natural way in a broad class of brane-world models. This type of texture, known as a brane-skyrmion, can be understood as a hole in the brane which makes it possible to pass through them along the extra-dimensional space. The typical scales needed for the proposed brane-skyrmions to correctly describe the observed CS can be as low as the electroweak scale., DGICYT (Spain), UCM-Santander, DOE, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2016 World Scientific Publishing. This work has been supported by the Spanish MICINNs Consolider-Ingenio 2010 Programme under grant MultiDark CSD2009-00064 and MINECO grant FPA2014- 53375-C2-1-P and FIS2014-52837-P., Scalar particles coupled to the Standard Model fields through a disformal coupling arise in different theories, such as massive gravity or braneworld models. We will review the main phenomenology associated with such particles. Distinctive disformal signatures could be measured at colliders and with astrophysical observations. The phenomeno-logical relevance of the disformal coupling demands the introduction of a set of symmetries, which may ensure the stability of these new degrees of freedom. In such a case, they constitute natural dark matter candidates since they are generally massive and weakly coupled. We will illustrate these ideas by paying particular attention to the branon case, since these questions arise naturally in braneworld models with low tension, where they were first discussed., Ministerio de Ciencia e Innovación (MICINN), Actividad Investigadora CONSOLIDER-INGENIO (MICINN), Ministerio de Economía y Competitividad (MINECO), Proyecto Método de Multimensajeros para la Detección de la Materia Oscura (MultiDark), Depto. de Física de Materiales, Fac. de Ciencias Físicas, TRUE, pub

© 2006 The American Physical Society. This work is partially supported by DGICYT (Spain) under project numbers FPA 2004-02602 and BFM 2002- 01003, by NSF grant No. PHY-0239817 and by the Fulbright-MEC (Spain) program., We study the possibility to explain the nonbaryonic dark matter abundance and improve the present fits on the muon anomalous magnetic moment through the same new physics. In this work we show that massive brane fluctuations (branons) in large extra-dimensions models can provide an economical way to deal with these two issues. This is so because the low-energy branon physics depends effectively on essentially only three parameters. Next collider experiments, such as LHC or ILC, will be sensitive to branon phenomenology in the natural parameter region where the theory is able to account for the two effects., DGICYT (Spain), NSF grant, Fulbright-MEC (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2003 The American Physical Society. This work has been partially supported by the DGICYT (Spain) under Projects No. FPA 2000-0956 and No. BFM2000-1326., We show that, in the context of brane-world scenarios with low tension [tau]=f^4, massive brane fluctuations (branons) are natural dark matter candidates. We calculate the present abundances for both hot (warm) and cold branons in terms of the branon mass M and the tension scale f. The results are compared with the current experimental bounds on these parameters. We also study the prospects for their detection in direct search experiments and comment on their characteristic signals in the indirect ones., DGICYT (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2013 American Physical Society. The authors thankfully acknowledge the computer resources, technical expertise, and assistance provided by the Barcelona Supercomputing Centre—Centro Nacional de Supercomputación—and the Tirant supercomputer support staff at Valencia. We are also pleased to thank Professor Antonio L. Maroto and Professor Torbjo¨rn Sjöstrand for their useful help and comments. This work has been supported by MICINN (Spain) Project Nos. FIS 2008-01323, FIS2011-23000, and FPA2011-27853-01 and Consolider-Ingenio MULTIDARK CSD2009-00064. R. L.D. is a fellow of FPI, Ref. BES-2012-056054., We explore the viscosities of a photon gas by means of the Euler-Heisenberg effective theory and quantum electrodynamics at zero electron chemical potential. We find parametric estimates that show a very large shear viscosity and an extremely small bulk viscosity (reflecting the very weak coupling simultaneously with a very approximate dilatation invariance). The system is of some interest because it exemplifies very neatly the influence of the breaking of scale invariance on the bulk viscosity., MICINN (Spain), Consolider-Ingenio MULTIDARK, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2011 IOP Publishing Ltd. International Workshop on the Dark Side of the Universe (6º. 2010. Guanajuato, México). I am grateful to K. Olive, M. Peloso, and M. Voloshin for useful discussions. DOE grant DOE/DE-FG02-94ER40823, FPA 2005-02327 project (DGICYT, Spain), CAM/UCM 910309 project, and MICINN Consolider-Ingenio MULTIDARK CSD2009-00064., There is a non-trivial four-derivative extension of the gravitational spectrum that is free of ghosts and phenomenologically viable. It is the so called R^2-gravity since it is defined by the only addition of a term proportional to the square of the scalar curvature. Just the presence of this term does not improve the ultraviolet behaviour of Einstein gravity but introduces one additional scalar degree of freedom that can account for the dark matter of our Universe., U. S. Department of Energy (DOE), Dirección General de Investigación Científica y Técnica (DGICYT) MINECO, España, Programa Consolider-Ingenio MULTIDARK, Ministerio de Economía y Competitividad (MINECO), España, Ministerio de Ciencia e Innovación (MICINN), España, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2012 American Physical Society. We would like to thank Daniel Nieto for useful comments. This work has been supported by Ministerio de Ciencia y Innovación (Spain) project numbers FIS 2008- 01323, FPA 2008-00592, and Consolider-Ingenio Multimessenger Approach for Dark Matter Detection (MULTIDARK) CSD2009-00064. A. d. l. C.-D. also acknowledges the University Research Council, the National Research Foundation (South Africa), and Universidad Complutense de Madrid., Branons are new degrees of freedom that appear in flexible brane-world models corresponding to brane fluctuations. These new fields can behave as standard weakly interacting massive particles (WIMPs) with a significant associated thermal relic density. We analyze the present constraints from their spontaneous annihilations into photons for Energetic Gamma-Ray Experiment Telescope (EGRET), Fermi Large Area Telescope (LAT), and Major Atmospheric Gamma-Ray Imaging Cherenkov (MAGIC) telescopes, and the prospects for detection in future Cherenkov telescopes. In particular, we focus on possible signals coming from the Galactic center and different dwarf spheroidals, such as Draco, Sagittarius, Canis Major and SEGUE 1. We conclude that for those targets, present observations are below the sensitivity limits for branon detection by assuming standard dark matter distributions and no additional boost factors. However, future experiments such as the Cherenkov Telescope Array (CTA) could be able to detect gamma-ray photons coming from the annihilation of branons with masses higher than 150 GeV., Ministerio de Ciencia e Innovacion, Spain, Consolider-Ingenio Multimessenger Approach for Dark Matter Detection (MULTIDARK), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2007 IOP Publishing Ltd. IRGAC Meeting (2006. Barcelona, España). This work has been partially supported by DGICYT (Spain) under project numbers FPA 2004- 02602 and FPA 2005-02327, by NSF grant no. PHY-0239817 and Fulbright-MEC Award., In this work, we will review the main properties of braneworld models with low tension. Starting from very general principles, it is possible to obtain an effective action for the relevant degrees of freedom at low energies (branons). Using the cross sections for high-energy processes involving branons, we set bounds on the different parameters appearing in these models. We also show that branons provide a WIMP candidate for dark matter in a natural way. We consider cosmological constraints on its thermal and non-thermal relic abundances. We derive direct detection limits and compare those limits with the preferred parameter region in the case in which the EGRET excess in the diffuse galactic gamma rays is due to dark matter annihilation. Finally, we will discuss the constraints coming from the precision tests of the standard model and the muon anomalous magnetic moment., DGICYT (Spain), NSF, Fulbright-MEC Award, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2015 IOP Publishing. We would like to thank Pablo Jimeno Romero for his useful advice, and to Luis J. Garay and José Beltrán Jiménez for helpful discussions. J.A.R.C. and A.d.l.C.D. acknowledge financial support from MINECO (Spain) projects FPA2011-27853-C02-01, FIS2011-23000 and Consolider-Ingenio MULTIDARK CSD2009-00064. J.J. acknowledges financial support the Spanish Ministerio de Educación, Cultura y Deporte for support through grant FPU-13/02934. J.A.R.C. thanks the support of the Becas Complutense del Amo program. A.d.l.C.D. thanks Kavli Institute for Theoretical Physics China (KITPC) for their hospitality and the ACGC University of Cape Town, for support during the early stages of preparation of this manuscript. A.d.l.C.D. is also indebted to the Centre de Cosmologie Physique des Particules et Phénoménologie CP3, Université catholique de Louvain, Louvain-la-Neuve, Belgium for its assistance with the final steps prior to the release of this manuscript. J.J. is grateful to the Theoretical Physics and the Atomic, Molecular and Nuclear Physics Departments, Complutense University of Madrid for technical facilities., We study electric and magnetic monopoles in static, spherically symmetric and constant curvature geometries in the context of the inverse electrodynamics model. We prove that this U(1) invariant Lagrangian density is able to support the standard metric of a Reissner-Nordstrom Black Hole, but with more complex thermodynamical properties than in the standard case. By employing the Euclidean Action approach we perform a complete analysis of its phase space depending on the sign and singularities of the heat capacity and the Helmholtz free energy., Ministerio de Economía y Competitividad (MINECO), España, Consolider-Ingenio MULTIDARK, Spanish Ministerio de Educacion, Cultura y Deporte, Becas Complutense del Amo program, ACGC University of Cape Town, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

This work was supported by UCM FPI grants G/640/400/8000 (2011 Program), the Spanish MINECO projects numbers FIS2011 23000, FPA2011-27853-C02-01, FPA2011-22975 and MULTIDARK CSD2009-00064 (Consolider-Ingenio 2010 Programme). AdlCD also acknowledges _nancial support from Marie Curie - Beatriu de Pinos contract BP-B00195, Generalitat de Catalunya and ACGC, University of Cape Town. RL also acknowledges Prometeo/2009/091 (Generalitat Valenciana) and EU ITN UNILHC PITN-GA-2009-237920 _nancial support., We study the differences in the gamma-ray spectra simulated by four Monte Carlo event generator packages developed in particle physics. Two different versions of PYTHIA and two of HERWIG are analyzed, namely PYTHIA 6.418 and HERWIG 6.5.10 in Fortran and PYTHIA 8.165 and HERWIG 2.6.1 in C++. For all the studied channels, the intrinsic differences between them are shown to be significative and may play an mportant role in misunderstanding dark matter signals., UCM FPI, MINECO, España, Generalitat de Catalunya, Marie Curie - Beatriu de Pinos, ACGC, University of Cape Town, Generalitat Valenciana, EU ITN UNILHC, Consolider-Ingenio MULTIDARK, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2011 American Physical Society. This work has been supported in part by MICINN (Spain) Projects No. FIS 2008-01323 and No. FPA 2008-00592, CAM/UCM 910309, MEC Grant No. BES-2006-12059, DOE Grant No. DE-FG02-94ER40823 and MICINN Consolider-Ingenio MULTIDARK CSD2009-00064. We are particularly grateful to Professor Jonathan Feng for his continuous and encouraging help at UC Irvine during the summer of 2007. We would also like to thank Dr. Mario Bondioli for his preliminary help with simulation software and Dr. Mirco Cannoni, Professor Mario E. Gómez and Professor Mikhail Voloshin for interesting discussions about different aspects of the physical meaning of the spectra behavior. Dr. Abelardo Moralejo drew our attention of some particular aspects of bremsstrahlung. Finally, fruitful discussions were held with Daniel Nieto about detectors' technicalities and improvement of the numerical codes. R. L. acknowledges financial support given by Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), by the University of Torino (UniTO), by the Istituto Nazionale di Fisica Nucleare (INFN) within the Astroparticle Physics Project, and by the Italian Space Agency (ASI) under Contract No. I/088/06/0. AdlCD wants to thank David Fernández (UCM) for his technical support with the performed simulations and Dr. Javier Almeida for his help to manage simulation results. Scientific discussions about other available simulation software were held with Beatriz Canadas., If the present dark matter in the Universe annihilates into standard model particles, it must contribute to the fluxes of cosmic rays that are detected on the Earth and, in particular, to the observed gamma-ray fluxes. The magnitude of such a contribution depends on the particular dark matter candidate, but certain features of the produced photon spectra may be analyzed in a rather model-independent fashion. In this work we provide the complete photon spectra coming from WIMP annihilation into standard model particle-antiparticle pairs obtained by extensive Monte Carlo simulations. We present results for each individual annihilation channel and provide analytical fitting formulas for the different spectra for a wide range of WIMP masses., Ministerio de Ciencia e Innovación, Ministerio de Educación y Ciencia, Ministero dell'Istruzione, dell'Università e della Ricerca, University of Torino, Istituto Nazionale di Fisica Nucleare within the Astroparticle Physics Project, Italian Space Agency, MICINN Consolider-Ingenio MULTIDARK, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2014 IOP Publishing Ltd. This work has been supported by MICINN (Spain) project numbers FIS2011-23000, FPA2011-27853-01 and Consolider Ingenio MULTIDARK CSD2009-00064., We show that the energy-momentum tensor of homogeneous fields of arbitrary spin in an expanding universe is always isotropic in average provided the fields remain bounded and evolve rapidly compared to the rate of expansion. An analytic expression for the average equation of state is obtained for Lagrangians with generic power-law kinetic and potential terms. As an example we consider the behavior of a spin-two field in the standard Fierz-Pauli theory of massive gravity. The results can be extended to general space-time geometries for locally inertial observers., MICINN (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

©2003 The American Physical Society. This work has been partially supported by the DGICYT (Spain) under Project Nos. PB98-0782, AEN99-0305, FPA 2000-0956, and BFM2000-1326 and also by the director, Of-fice of Science, Office of High Energy and Nuclear Physics of the U.S. Department of Energy under Contract DE-AC03-76SF00098. A.D. acknowledges support from the Universidad Complutense del Amo Program., In the context of the brane-world scenarios with compactified large extra dimensions, we study the production of the possible massive brane oscillations (branons) in electron-positron colliders. We compute their contribution to the electroweak gauge bosons decay width and to the single-photon and single-Z processes. With CERN LEP-I results and assuming nonobservation at LEP-II we present exclusion plots for the brane tension tau=f(4) and the branon mass M. Prospects for the next generation of electron-positron colliders are also considered., DGICYT, Office of Science, Office of High Energy and Nuclear Physics, U.S. Department of Energy, Universidad Complutense del Amo Program, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2014 IOP Publishing Ltd and Sissa Medialab srl. This work has been supported by MICINN (Spain) projects numbers FIS2011-23000, FPA2011-27853-C02-01, FPA2011-27853-C02-01, UCM-BSCH GR58/08 910309 and Consolider-Ingenio MULTIDARK CSD2009-00064. F.D.A. acknowledges financial support from the UAM+CSIC Campus of International Excellence (Spain). A.d.l.C.D. thanks the financial support from ACGC University of Cape Town and IEEC-ICE Barcelona in 2013 as well as the hospitality of Kavli Institute for Theoretical Physics China (KITPC) during the preparation of this manuscript., In this work we address the issue of studying the conditions required to guarantee the Focusing Theorem for both null and time like geodesic congruences by using the Raychaudhuri equation. In particular we study the case of Friedmann-Robertson-Walker as well as more general Bianchi Type I spacetimes. The fulfillment of the Focusing Theorem is mandatory in small scales since it accounts for the attractive character of gravity. However, the Focusing Theorem is not satisfied at cosmological scales due to the measured negative deceleration parameter. The study of the conditions needed for congruences convergence is not only relevant at the fundamental level but also to derive the viability conditions to be imposed on extended theories of gravity describing the different expansion regimes of the universe. We illustrate this idea for f (R) gravity theories., Ministerio de Ciencia e Innovación (MICINN), España, Actividad Investigadora CONSOLIDER - INGENIO - MULTIDARK (MICINN), Campus de Excelencia Internacional (CEI) UAM-CSIC, ACGC University of Cape Town, IEEC-ICE Barcelona, Universidad Autónoma de Madrid (UAM), Consejo Superior de Investigaciones Científicas (CSIC), España, Institut d'Estudis Espacials de Catalunya (IEEC), Instituto de Ciencias del Espacio (ICE), Universidad Complutense de Madrid (UCM), Banco Santander Central Hispano (BSCH), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© IOP Publishing. Spanish Relativity Meeting on Gravity as a Crossroad in Physics (2010. Granada,España). This work was supported by MICINN (Spain) project numbers FIS 2008-01323 and FPA 2008- 00592, FPA2008-00319, CAM/UCM 910309, and Consolider-Ingenio MULTIDARK CSD2009- 00064. AdlCD was also supported by the National Research Foundation (South Africa). RL was also supported by the EC contract UNILHC PITN-GA-2009-237920 and PROMETEO/2009/091 (Generalitat Valenciana)., Annihilation of different dark matter (DM) candidates into Standard Model (SM) particles could be detected through their contribution to the gamma ray fluxes that are measured on the Earth. The magnitude of such contributions depends on the particular DM candidate, but certain imprints of produced photon spectra may be analyzed in a model-independent fashion. In this work we provide the fitting formulae for the photon spectra generated by WIMP annihilation into quarks, leptons and gauge bosons channels in a wide range of WIMP masses., MICINN (Spain), Consolider-Ingenio MULTIDARK, National Research Foundation (South Africa), EC contract, Generalitat Valenciana, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

©2013 IOP Publishing Ltd and Sissa Medialab srl This work has been supported by MINECO (Spain) project numbers FIS2011-23000, FPA2011-27853-C02-01 and Consolider-Ingenio MULTIDARK CSD2009-00064. AdlCD also acknowledges financial support from Marie Curie - Beatriu de Pinós contract BP-B00195, Generalitat de Catalunya and ACGC, University of Cape Town., Raychaudhuri equation is found provided that particular energy conditions are assumed and regardless the considered solution of the Einstein's equations. This fact is usually interpreted as a manifestation of the attractive character of gravity. Nevertheless, a positive contribution to Raychaudhuri equation from space-time geometry should occur since this is the case in an accelerated expanding Robertson-Walker model for congruences followed by fundamental observers. Modified gravity theories provide the possibility of a positive contribution although the standard energy conditions are assumed. We address this important issue in the context of f(R) theories, deriving explicit upper bounds for the contribution of space-time geometry to the Raychaudhuri equation. Then, we examine the parameter constraints for some paradigmatic f(R) models in order to ensure a positive contribution to this equation. Furthermore, we consider the implications of these upper bounds in the equivalent formulation of f(R) theories as a Brans-Dicke model., MINECO (Spain), Consolider-Ingenio MULTIDARK, Marie Curie - Beatriu de Pinos, Generalitat de Catalunya, ACGC, University of Cape Town, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2012 IOP Publishing Ltd and Sissa Medialab srl. This work has been supported by MICINN (Spain) project number FPA 2008-00592 and Consolider-Ingenio MULTIDARK CSD2009-00064. AdlCD also acknowledges financial support from NRF and URC research fellowships (South Africa) and kind hospitality of UCM, Madrid while elaborating part of the manuscript., We study the gravitational collapse in modified gravitational theories. In particular, we analyze a general f(R) model with uniformly collapsing cloud of self-gravitating dust particles. This analysis shares analogies with the formation of large-scale structures in the early Universe and with the formation of stars in a molecular cloud experiencing gravitational collapse. In the same way, this investigation can be used as a first approximation to the modification that stellar objects can suffer in these modified theories of gravity. We study concrete examples, and find that the analysis of gravitational collapse is an important tool to constrain models that present late-time cosmological acceleration., Ministerio de Ciencia e Innovación (MICINN), España, Programa Consolider-Ingenio-MULTIDARK, National Research Foundation (NRF), Sudáfrica, URC, Sudáfrica, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2006 The American Physical Society. J. A. R. C. thanks C. P. Martin for important comments on the renormalization procedure. This work is supported in part by DGICYT (Spain) under Projects No. FPA 2004- 02602 and No. FPA 2005-02327, by NSF Grant No. PHY– 0239817 and by the Fulbright-MEC (Spain) program., In the context of brane-world scenarios, we study the effects produced by the exchange of virtual massive branons. A one-loop calculation is performed which generates higher-dimensional operators involving SM fields suppressed by powers of the brane tension scale. We discuss constraints on this scenario from colliders such as HERA, LEP and Tevatron and prospects for future detections at LHC or ILC. The most interesting phenomenology comes from new four-particles vertices induced by branon radiative corrections, mainly from four-fermion interactions. The presence of flexible branes modifies also the muon anomalous magnetic moment and the electroweak precision observables., DGICYT (Spain), NFS, Fulbright-MEC (Spain) program, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2012 American Physical Society. This work has been supported by MICINN (Spain) Projects No. FIS 2008-01323, No. FIS2011-23000, No. FPA2011-27853-01 and Consolider-Ingenio MULTIDARK CSD2009-00064. J.A.R. C. acknowledges the kind hospitality of the Institute of Theoretical Astrophysics at the University of Oslo, Norway, We show that the gamma ray spectrum observed with the HESS array of Cherenkov telescopes coming from the Galactic Center region and identified with the source HESS J1745-290 is well fitted by the secondary photons coming from dark matter (DM) annihilation over a diffuse power law background. The amount of photons and morphology of the signal localized within a region of few parsecs, require compressed DM profiles as those resulting from baryonic contraction, which offer 103 enhancements in the signal over DM alone simulations. The fitted background from HESS data is consistent with recent Fermi-LAT observations of the same region., MICINN (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2011 IOP Publishing Ltd. International Workshop on the Dark Side of the Universe (6º. 2010. Guanajuato, México). This work is supported in part by CONACYT, DOE grant DOE/DE-FG02-94ER40823, FPA 2005-02327 project (DGICYT, Spain), CAM/UCM 910309 project, and MICINN Consolider-Ingenio MULTIDARK CSD2009-00064., The inert doublet model is an extension of the Standard Model of Elementary Particles that is defined by the only addition of a second Higgs doublet without couplings to quarks or leptons. This minimal framework has been studied for many reasons. In particular, it has been suggested that the new degrees of freedom contained in this doublet can account for the Dark Matter of the Universe., Consejo Nacional de Ciencia y Tecnologia (CONACYT), México, U. S. Department of Energy (DOE), Dirección General de Investigación Científica y Técnica (DGICYT), MINECO, España, Ministerio de Ciencia e Innovación (MICINN), España, Programa Consolider-Ingenio, MULTIDARK (MICINN), España, Ministerio de Economía y Competitividad (MINECO), España, Universidad Complutense de Madrid (UCM), Comunidad Autónoma de Madrid (CAM), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. This work was supported by UCM FPI grants G/640/400/8000 (2011 Program), the Spanish MINECO projects numbers FIS2011-23000, FPA2011-27853-C02-01and MULTIDARK CSD2009-00064 (Consolider- Ingenio 2010 Programme). A.d.l.C.D. also acknowledges the hospitality of FAE-UAB in the final stages of preparation of this manuscript., We present a study of the Galactic Center region as a possible source of both secondary gamma-ray and neutrino fluxes from annihilating dark matter. We have studied the gamma-ray flux observed by the High Energy Stereoscopic System (HESS) from the J1745-290 Galactic Center source. The data are well fitted as annihilating dark matter in combination with an astrophysical background. The analysis was performed by means of simulated gamma spectra produced by Monte Carlo event generators packages. We analyze the differences in the spectra obtained by the various Monte Carlo codes developed so far in particle physics. We show that, within some uncertainty, the HESS data can be fitted as a signal from a heavy dark matter density distribution peaked at the Galactic Center, with a power-law for the background with a spectral index which is compatible with the Fermi-Large Area Telescope (LAT) data from the same region. If this kind of dark matter distribution generates the gamma-ray flux observed by HESS, we also expect to observe a neutrino flux. We show prospective results for the observation of secondary neutrinos with the Astronomy with a Neutrino Telescope and Abyss environmental RESearch project (ANTARES), Ice Cube Neutrino Observatory (Ice Cube) and the Cubic Kilometer Neutrino Telescope (KM3NeT). Prospects solely depend on the device resolution angle when its effective area and the minimum energy threshold are fixed., Ministerio de Economía y Competitividad (MINECO), Universidad Complutense de Madrid (UCM), Proyecto Método de Multimensajeros para la Detección de la Materia Oscura (MultiDark), Programa Conosolider-Ingenio (MINECO), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2004 The American Physical Society. We would like to thank J. Terrón, M. Vázquez, and M. Spiropulu for useful comments and experimental information. This work has been partially supported by the DGICYT (Spain) under Projects No. FPA2000-0956 and No. BFM2002-01003., In the context of the brane-world scenarios with compactified extra dimensions, we study the production of brane fluctuations (branons) in hadron colliders (p (p) over bar, pp, and e(+/-)p) in terms of the brane tension parameter f, the branon mass M, and the number of branons N. From the absence of monojet events at HERA and Tevatron (run I), we set bounds on these parameters and we also study how such bounds could be improved at Tevatron (run II) and the future LHC. The single-photon channel is also analyzed for the two last colliders., DGICYT (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2013 American Physical Society. J. A. R. C. and A. d. l. C. D. acknowledge financial support from MINECO (Spain) Projects No. FIS2011-23000, No. FPA2011-27853-C02-01 and Consolider-Ingenio MULTIDARK CSD2009-00064. A. d. l. C. D. also acknowledges financial support from Marie Curie-Beatriu de Pinos Contract No. BP-B00195, Generalitat de Catalunya and ACGC, University of Cape Town. L. O. G. is indebted to the Theoretical Physics Department, Complutense University of Madrid for the use of technical resources. A. d. l. C. D acknowledges the hospitality of Kavli Institute for Theoretical Physics China (KITPC), Chinese Academy of Sciences, during the last stages of this manuscript., In the context of scalar-tensor theories we study the evolution of the density contrast for Jordan-Fierz-Brans-Dicke theories in a Friedmann-Lemaitre-Robertson-Walker universe. Calculations are performed in the Einstein frame with the cosmological background described as Lambda-cold dark matter (Lambda CDM) and supplemented by a Jordan-Fierz-Brans-Dicke field. By using a completely general procedure valid for all scalar-tensor theories, we obtain the exact fourth-order differential equation for the density contrast evolution in modes of arbitrary size. In the case of sub-Hubble modes, the expression reduces to a simpler but still fourth-order equation that is then compared with the standard (quasistatic) approximation. Differences with respect to the evolution as predicted by the standard concordance Lambda CDM model are observed depending on the value of the coupling., Ministerio de Economía y Competitividad (MINECO), Actividad Investigadora CONSOLIDER - INGENIO - MULTIDARK (MINECO), Acciones Marie Skłodowska-Curie (UE), Generalitat de Catalunya, ACGC, University of Cape Town, Programa Beatriu de Pinós (BP-DGR), Unión Europea (UE), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2015 IOP Publishing Ltd and Sissa Medialab srl. This work has been supported by UCM predoctoral grant, MICINN (Spain) project numbers FIS 2008-01323, FIS2011-23000, FPA2011-27853-01, Consolider-Ingenio MULTIDARK CSD2009-00064, and the Department of Energy, Contract DE-AC02-76SF00515., The center of our Galaxy is a complex region characterized by extreme phenomena. The presence of the supermassive Sagittarius A* black hole, a high dark matter density and an even higher baryonic density are able to produce very energetic processes. Indeed, high energetic gamma-rays have been observed by different telescopes, although their origin is not clear. In this work, we estimate the possible antiproton flux component associated with this signal. The expected secondary astrophysical antiproton background already saturates the observed data. It implies that any other important astrophysical source leads to an inconsistent excess. We estimate the sensitivity of PAMELA to this new primary antiproton source, which depends on the diffusion model and its spectral features. In particular, we consider antiproton spectra described by a power-law, a monochromatic signal and a Standard Model particle-antiparticle channel production. This latter spectrum is typical in the production from annihilating or decaying dark matter. We pay particular attention to the case of a heavy dark matter candidate, which could be associated with the High Energy Stereoscopic System (HESS) data observed from the J1745-290 source., Ministerio de Ciencia e Innovación (MICINN), España, Consolider-Ingenio MULTIDARK, U.S. Department of Energy Office of Science (EE.UU), Universidad Complutense de Madrid (UCM), Ministerio de Economía y Competitividad (MINECO), España, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2012 American Physical Society. This work has been supported by MICINN (Spain) under Project Nos. FIS 2008-01323, FIS2011-23000, FPA2011- 27853 01 and Consolider-Ingenio MULTIDARK under Contract No. CSD2009-00064., We consider homogeneous Abelian vector fields in an expanding universe. We find a mechanical analogy in which the system behaves as a particle moving in three dimensions under the action of a central potential. In the case of bounded and rapid evolution compared to the rate of expansion, we show-by making use of the virial theorem-that for an arbitrary potential and polarization pattern, the average energy-momentum tensor is always diagonal and isotropic despite the intrinsic anisotropic evolution of the vector field. For simple power law potentials of the form V = lambda(A(mu)A(mu))(n), the average equation of state is found to be w = (n - 1)/(n + 1). This implies that vector coherent oscillations could act as natural dark matter or dark energy candidates. Finally, we show that under very general conditions, the average energy-momentum tensor of a rapidly evolving bounded vector field in any background geometry is always isotropic and has the perfect fluid form for any locally inertial observer., MICINN (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2011 American Physical Society. This work is supported in part by DOE Grant Nos. FG02-94ER40823, FPA 2005-02327 project (DGICYT, Spain), CAM/UCM 910309 project, MICINN Consolider-Ingenio MULTIDARK CSD2009-00064, CONACYT (Mexico), and SNI (Mexico)., Dark Matter direct detection experiments are able to exclude interesting parameter space regions of particle models which predict an important amount of thermal relics. We use recent data to constrain the branon model and to compute the region that is favored by CDMS measurements. Within this work, we also update present colliders constraints with new studies coming from the LHC. Despite the present low luminosity, it is remarkable that for heavy branons, CMS and ATLAS measurements are already more constraining than previous analyses performed with TEVATRON and LEP data., U. S. Department of Energy (DOE), Dirección General de Investigación Científica y Técnica (DGCYT), España, Ministerio de Ciencia e Innovación (MICINN),España, Consejo Nacional de Ciencia y Tecnología (CONACYT), México, Sistema Nacional de Investigadores (SNI), México, Proyecto Consolider-Ingenio (MICINN), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2012 IOP Publishing Ltd and Sissa Medialab srl. We would like to thank prof. G. F. R. Ellis for drawing our attention to reference [10]. This work has been supported by MICINN (Spain) projects numbers FIS2011-23000, FPA2011-27853-C02-01 and Consolider-Ingenio MULTIDARK CSD2009-00064. FDA would like to thank Theoretical Physics I department, Complutense University of Madrid for providing all the required academic resources. AdlCD acknowledges financial support from NRF and URC research fellowships (South Africa). JARC acknowledges the kind hospitality of ACGC/University of Cape Town while elaborating the manuscript., We study the accelerated expansion of the Universe through its consequences on a congruence of geodesics. We make use of the Raychaudhuri equation which describes the evolution of the expansion rate for a congruence of timelike or null geodesics. In particular, we focus on the space-time geometry contribution to this equation. By straightforward calculation from the metric of a Robertson-Walker cosmological model, it follows that in an accelerated expanding Universe the space-time contribution to the Raychaudhuri equation is positive for the fundamental congruence, favoring a non-focusing of the congruence of geodesics. However, the accelerated expansion of the present Universe does not imply a tendency of the fundamental congruence to diverge. It is shown that this is in fact the case for certain congruences of timelike geodesics without vorticity. Therefore, the focusing of geodesics remains feasible in an accelerated expanding Universe. Furthermore, a negative contribution to the Raychaudhuri equation from space-time geometry which is usually interpreted as the manifestation of the attractive character of gravity is restored in an accelerated expanding Robertson-Walker space-time at high speeds., Ministerio de Ciencia e Innovación (MICINN), España, Programa Consolider-Ingenio (Proyecto MULTIDARK), National Research Foundation (NRF), Sudáfrica, URC, Sudáfrica, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2013 American Physical Society. We thank Marco Peloso and Jose Beltrán Jiménez for useful comments. This work has been supported by MICINN (Spain) project numbers FIS2011-23000, FPA2011-27853-01, and Consolider-Ingenio MULTIDARK CSD2009-00064., We consider homogeneous non-Abelian vector fields with general potential terms in an expanding universe. We find a mechanical analogy with a system of N interacting particles (with N the dimension of the gauge group) moving in three dimensions under the action of a central potential. In the case of bounded and rapid evolution compared to the rate of expansion, we show by making use of a generalization of the virial theorem that for an arbitrary potential and polarization pattern, the average energy-momentum tensor is always diagonal and isotropic despite the intrinsic anisotropic evolution of the vector field. We consider also the case in which a gauge-fixing term is introduced in the action and show that the average equation of state does not depend on such a term. Finally, we extend the results to arbitrary background geometries and show that the average energy-momentum tensor of a rapidly evolving Yang-Mills field is always isotropic and has the perfect fluid form for any locally inertial observer., MICINN (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© World Scientic Publishing Company. This work has been partially supported by the DGICYT (Spain) under the project numbers FPA 2000-0956 and BFM2002-01003., Extra-dimensional theories contain additional degrees of freedom related to the geometry of the extra space which can be interpreted as new particles. Such theories allow to reformulate most of the fundamental problems of physics from a completely different point of view. In this essay, we concentrate on the brane fluctuations which are present in brane-worlds, and how such oscillations of the own space-time geometry along curved extra dimensions can help to resolve the Universe missing mass problem. The energy scales involved in these models are low compared to the Planck scale, and this means that some of the brane fluctuations distinctive signals could be detected in future colliders and in direct or indirect dark matter searches., DGICYT (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

©2001 The American Physical Society. This work was partially supported by the Ministerio de Educación y Ciencia (Spain) (CICYT AEN 97-1693 and PB98-0782), In the context of a brane world and including an induced curvature term in the brane action, we obtain the effective Lagrangian for the Goldstone bosons (branons) associated with the spontaneous breaking of the translational invariance in the bulk. In addition to the branons, this effective action has Skyrmion-like solitonic states which can be understood as holes in the brane. We study their main properties such as mass and size, the Skyrmion-branon interaction, and their possible fermionic quantization. We also consider states where the brane is wrapped around the extra dimensions and their relation with the brane-Skyrmions. Finally, we extend our results to higher-dimensional branes, such as those appearing in M theory, where brane-Skyrmions could also be present., Ministerio de Educación y Ciencia (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2014 American Physical Society. We would like to thank Juande Zornoza and Carlos de los Heros for useful comments. This work has been supported by UCM predoctoral grant, MICINN (Spain) project numbers FIS 2008-01323, FIS2011-23000, FPA2011-27853-01, Consolider-Ingenio MULTIDARK CSD2009-00064, and the Department of Energy, Contract DE-AC02-76SF00515. J. A. R. C. thanks the support of the Becas Complutense del Amo program., The spectral study of the HESS J1745-290 high-energy gamma-ray cutoff from the Galactic center is compatible with a signal of dark matter (DM) annihilation or decay. If this is the case, a neutrino flux from that source is also expected. We analyze the neutrino flux predicted by DM particles able to create the HESS J1745-290 gamma-rays observations. We focus on the electroweak and hadronic channels, which are favored by present measurements. In particular, we study DM annihilating into W+W- and u (u) over bar with DM masses of 48.8 and 27.9 TeV, respectively. We estimate the resolution angle and exposition time necessary to test the DM hypothesis as the origin of the gamma-ray signal., MICINN (Spain), Consolider-Ingenio MULTIDARK, Department of Energy, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

©2003 American Institute of Physics 0-7354-0135-7. Mexican School on Particles and Fields (10. 2002. Playa del Carmen, Mexico). This work has been partially supported by the DGICYT (Spain) under the projet numbers PB98-0782, AEN99-0305, FPA 2000-0956 and BFM2000-1326. A.D. acknowledges the hospitality of the LBNL Theory Group, where this work was partially done, economical support from the Universidad Complutense del Amo Program and very especially the organizers of the X Mexicam Scool of Particles and Fields for their kind invitation and congratulates Augusto García and Arnulfo Zepeda for their 60th birthay., The recent proposal of theories with compactified large extra dimensions is reviewed. We pay especial attention to brane world models with low tension where the only relevant degrees of freedom at low energies are the Standard Model (SM) particles and the branons, which are transversal brane oscillations. By using an effective Lagrangian, we study some phenomenological consequences of these scenarios in a model independent way., DGICYT (Spain), Universidad Complutense del Amo Program, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

Este proyecto pretende fomentar las vocaciones en carreras universitarias de ciencia y tecnología de colectivos sociales especialmente infrarrepresentados en estas carreras. Estas disciplinas tienen en general, déficit de alumnos con respecto a otros grados de artes y humanidades, sin embargo, esta falta de vocaciones es más acentuada en clases sociales de menor nivel socioeconómico y en mujeres., This project aims to promote vocations in university careers in science and technology for social groups that are especially underrepresented in these careers. These disciplines generally have a deficit of students compared to other arts and humanities degrees, however, this lack of vocations is more accentuated in social classes of lower socioeconomic level and in women.

En este documento se resumen los principales resultados del proyecto de innovación docente titulado “La física y los medios audiovisuales”. Dicho proyecto fue llevado a cabo en la Facultad de Ciencias Físicas de la Universidad Complutense entre los años 2021 y 2022., Dieses Dokument fasst die wesentlichen Ergebnisse des Lehrinnovationsprojekts „Physik und audiovisuelle Medien“ zusammen. Dieses Projekt wurde zwischen 2021 und 2022 an der Fakultät für Physikalische Wissenschaften der Universität Complutense durchgeführt., This document summarizes the main results of the teaching innovation project entitled "Physics and audiovisual media". This project was carried out at the Faculty of Physical Sciences of the Complutense University between 2021 and 2022., Ce document synthétise les principaux résultats du projet d'innovation pédagogique intitulé "Physique et médias audiovisuels". Ce projet a été réalisé à la Faculté des Sciences Physiques de l'Université Complutense entre 2021 et 2022.

© The Authors 2022 We would like to thank Antonio Lopez Maroto for valuable discussions at the beginning of this study. R.L.D. was financially supported by the Ramon Areces Foundation, the INFN post-doctoral fellowship AAOODGF-2019-0000329 and the Spanish grant MICINN: PID2019-108655GB-I00. HVR is supported by funding from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme grant agreement No. 801781. The simulations have been carried out on the computing facilities of the Computational Center for Particle and Astrophysics (C2PAP) and the Leibniz Supercomputing Center (SuperMUC), on the local theory cluster (T30 cluster) of the Physics Department of the Technische Universitat Munchen (TUM), and on local computing facilities at the INFN-Firenze., We analyze LHC data in order to constrain the parameter space of new spin-2 particles universally coupled to the energy-momentum tensor. These new hypothetical particles are the so-called hidden gravitons, whose phenomenology at low energies is determined by two parameters: its mass and its dimensional coupling constant. Hidden gravitons arise in many different extensions of the Standard Model of particles and interactions and General Relativity. Their phenomenology has been studied mainly in relation to modifications of gravity and astrophysical signatures. In this work, we extend the constraints for heavy hidden gravitons, with masses larger than 1 GeV, by taking into account events collected by ATLAS and CMS in the WW channel, Drell-Yan processes, and the diphoton channel from proton-proton collisions at root s = 8TeV., Unión Europea. Horizonte 2020/ERC, Ministerio de Ciencia e Innovación (MICINN), Fundación Ramón Areces, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© The Autor(s) 2022 We thank F. J. Llanes-Estrada and V. Sanz for useful comments. This work was supported by Grants FPU16/06960 (MECD), the MICINN (Spain) projects PID2019-107394GB-I00/AEI/10.13039/501100011033 (AEI/FEDER, UE) and PID2019108655GB-I00/AEI/10.13039/501100011033 (AEI), the EU STRONG2020 project [grant no.824093], and STMS Grant from COST Action CA16108. JARC acknowledges support by Institut Pascal at Universite Paris-Saclay during the Paris-Saclay Astroparticle Symposium 2021, with the support of the P2IO Laboratory of Excellence (program "Investissements d-avenir" ANR-11-IDEX-0003-01 Paris-Saclay and ANR-10-LABX-0038), the P2I axis of the Graduate School Physics of Universite Paris-Saclay, as well as IJCLab, CEA, IPhT, APPEC, the IN2P3 master project UCMN and EuCAPT. This research was supported by the Munich Institute for Astro-and Particle Physics (MIAPP) which is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy-EXC-2094-390783311., We provide a simple computation in order to estimate the probability of a given hierarchy between two scales. In particular, we work in a model provided with a gauge symmetry, with two scalar doublets. We start from a scale-invariant classical Lagrangian, but by taking into account the Coleman-Weinberg mechanism, we obtain masses for the gauge bosons and the scalars. This approach typically provides a light (L) and a heavy (H) sector related to the two different vacuum expectation values of the two scalars. We compute the size of the hypervolume of the parameter space of the model associated with an interval of mass ratios between these two sectors. We define the probability as proportional to this size and conclude that probabilities of very large hierarchies are not negligible in the type of models studied in this work., Unión Europea. Horizonte 2020, Ministerio de Ciencia e Innovación (MICINN)/AEI/FEDER, Ministerio de Ciencia e Innovación (MICINN), Ministerio de Educación Cultura y Deporte (MECD), Agence nationale de la recherche (ANR), German Research Foundation (DFG), IJCLab, IPhT, APPEC, CEA, IN2P3-UCMN, EuCAPT, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© The Author(s) 2022. This work was partially supported by the MICINN (Spain) projects PID2019-107394GB-I00 and PID2020-118159GB-C44. S.A.O. thanks IPARCOS-UCM and the CAM/FEDER Project No.S2018/TCS-4342 (QUITEMAD-CM) for funding support., Accelerating black holes are described by the so-called C-metric. In this work, we analyse the causal structure of such black holes by using null geodesics. We construct explicitly the relevant Penrose diagrams. First, we recover well-known results associated with the sub-accelerating black holes. Then, we extend the study to the super-accelerating case, in which an additional essential singularity appears. In addition, we consider accelerating black holes with negative masses. We show that they are equivalent to the geometry described by the black hole metric beyond conformal infinity. We compare our results with the Schwarzschild geometry to facilitate understanding and to highlight the interest of the new features., Ministerio de Ciencia e Innovación (MICINN)/AEI, Comunidad de Madrid, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© 2022 Amer Physical Soc This work was partially supported by the MICINN (Ministerio de Ciencia e Innovacion, Spain) Project No. PID2019-107394GB-I00 (AEI/FEDER, UE) . J. A. R. C. acknowledges support by Institut Pascal at Universite Paris-Saclay during the Paris-Saclay Astroparticle Symposium 2021, with the support of the P2IO (Physics of the two infinities and Origins) Laboratory of Excellence (program "Investissements d'avenir" ANR-11-IDEX-0003-01 Paris-Saclay and ANR-10-LABX-0038) , the P2I (Physics of the two infinities) axis of the Graduate School Physics of Universite Paris-Saclay, as well as IJCLab (Laboratoire de Physique des 2 Infinis Ire`ne Joliot-Curie) , CEA (Commissariat a` l'energie atomique) , IPhT (Institute of Theoretical Physics) , APPEC (Astroparticle physics Consortium) , the IN2P3 (Institut national de physique nucleaire et de physique des particules) master projet UCMN and EuCAPT (European Consortium for Astroparticle Theory) . This research was supported by the Munich Institute for Astro-and Particle Physics (MIAPP) which is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy-EXC-2094-390783311., Solutions to vacuum Einstein field equations with cosmological constants, such as the de Sitter space and the anti-de Sitter space, are basic in different cosmological and theoretical developments. It is also well known that complex structures admit metrics of this type. The most famous example is the complex projective space endowed with the Fubini-Study metric. In this work, we perform a systematic study of Einstein complex geometries derived from a logarithmic Kahler potential. Depending on the different contribution to the argument of such logarithmic term, we shall distinguish among direct, inverted and hybrid coordinates. They are directly related to the signature of the metric and determine the maximum domain of the complex space where the geometry can be defined., Ministerio de Ciencia e Innovación (MICINN)/FEDER, Agence nationale de la recherche (ANR), German Research Foundation (DFG), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

© The Author(s) 2022 Erratum to: Eur.Phys.J.C(2017)77:755, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

Esta documento corresponde a la memoria final de ejecución del proyecto de innovación docente número 210 de la convocatoria 2020/2021 que lleva por título "Física, Matemáticos y Música".