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1. Prospects for Fundamental Physics with LISA

Author

Barausse, Enrico, Berti, Emanuele, Hertog, Thomas, Hughes, Scott A., Jetzer, Philippe, Pani, Paolo, Sotiriou, Thomas P., Tamanini, Nicola, Witek, Helvi, Yagi, Kent, Yunes, Nicolas, Abdelsalhin, T., Achucarro, A., Aelst, K. V., Afshordi, N., Akcay, S., Annulli, L., Arun, K. G., Ayuso, I., Baibhav, V., Baker, T., Bantilan, H., Barreiro, T., Barrera-Hinojosa, C., Bartolo, N., Baumann, D., Belgacem, E., Bellini, E., Bellomo, N., Ben-Dayan, I., Bena, I., Benkel, R., Bergshoefs, E., Bernard, L., Bernuzzi, S., Bertacca, D., Besancon, M., Beutler, F., Beyer, F., Bhagwat, S., Bicak, J., Biondini, S., Bize, S., Blas, D., Boehmer, C., Boller, K., Bonga, B., Bonvin, C., Bosso, P., Bozzola, G., Brax, P., Breitbach, M., Brito, R., Bruni, M., Brügmann, B., Bulten, H., Buonanno, A., Burke, A. O., Burko, L. M., Burrage, C., Cabral, F., Calcagni, G., Caprini, C., Cárdenas-Avendaño, A., Celoria, M., Chatziioannou, K., Chernoff, D., Clough, K., Coates, A., Comelli, D., Compère, G., Croon, D., Cruces, D., Cusin, G., Dalang, C., Danielsson, U., Das, S., Datta, S., de Boer, J., De Luca, V., De Rham, C., Desjacques, V., Destounis, K., Di Filippo, F., Dima, A., Dimastrogiovanni, E., Dolan, S., Doneva, D., Duque, F., Durrer, R., East, W., Easther, R., Elley, M., Ellis, J. R., Emparan, R., Ezquiaga, J. M., Fairbairn, M., Fairhurst, S., Farmer, H. F., Fasiello, M. R., Ferrari, V., Ferreira, P. G., Ficarra, G., Figueras, P., Fisenko, S., Foffa, S., Franchini, N., Franciolini, G., Fransen, K., Frauendiener, J., Frusciante, N., Fujita, R., Gair, J., Ganz, A., Garcia, P., Garcia-Bellido, J., Garriga, J., Geiger, R., Geng, C., Gergely, L. Á., Germani, C., Gerosa, D., Giddings, S. B., Gourgoulhon, E., Grandclement, P., Graziani, L., Gualtieri, L., Haggard, D., Haino, S., Halburd, R., Han, W. -B., Hawken, A. J., Hees, A., Heng, I. S., Hennig, J., Herdeiro, C., Hervik, S., Holten, J. v., Hoyle, C. J. D., Hu, Y., Hull, M., Ikeda, T., Isi, M., Jenkins, A., Julié, F., Kajfasz, E., Kalaghatgi, C., Kaloper, N., Kamionkowski, M., Karas, V., Kastha, S., Keresztes, Z., Kidder, L., Kimpson, T., Klein, A., Klioner, S., Kokkotas, K., Kolesova, H., Kolkowitz, S., Kopp, J., Koyama, K., Krishnendu, N. V., Kroon, J. A. V., Kunz, M., Lahav, O., Landragin, A., Lang, R. N., Poncin-Lafitte, C. Le, Lemos, J., Li, B., Liberati, S., Liguori, M., Lin, F., Liu, G., Lobo, F. S. N., Loll, R., Lombriser, L., Lovelace, G., Macedo, R. P., Madge, E., Maggio, E., Maggiore, M., Marassi, S., Marcoccia, P., Markakis, C., Martens, W., Martinovic, K., Martins, C. J. A. P., Maselli, A., Mastrogiovanni, S., Matarrese, S., Matas, A., Mavromatos, N. E., Mazumdar, A., Meerburg, P. D., Megias, E., Miller, J., Mimoso, J. P., Mittnacht, L., Montero, M. M., Moore, B., Martin-Moruno, P., Musco, I., Nakano, H., Nampalliwar, S., Nardini, G., Nielsen, A., Novák, J., Nunes, N. J., Okounkova, M., Oliveri, R., Oppizzi, F., Orlando, G., Oshita, N., Pappas, G., Paschalidis, V., Peiris, H., Peloso, M., Perkins, S., Pettorino, V., Pikovski, I., Pilo, L., Podolsky, J., Pontzen, A., Prabhat, S., Pratten, G., Prokopec, T., Prouza, M., Qi, H., Raccanelli, A., Rajantie, A., Randall, L., Raposo, G., Raymond, V., Renaux-Petel, S., Ricciardone, A., Riotto, A., Robson, T., Roest, D., Rollo, R., Rosofsky, S., Ruan, J. J., Rubiera-García, D., Ruiz, M., Rusu, M., Sabatie, F., Sago, N., Sakellariadou, M., Saltas, I. D., Sberna, L., Sathyaprakash, B., Scheel, M., Schmidt, P., Schutz, B., Schwaller, P., Shao, L., Shapiro, S. L., Shoemaker, D., Silva, A. d., Simpson, C., Sopuerta, C. F., Spallicci, A., Stefanek, B. A., Stein, L., Stergioulas, N., Stott, M., Sutton, P., Svarc, R., Tagoshi, H., Tahamtan, T., Takeda, H., Tanaka, T., Tantilian, G., Tasinato, G., Tattersall, O., Teukolsky, S., Tiec, A. L., Theureau, G., Trodden, M., Tolley, A., Toubiana, A., Traykova, D., Tsokaros, A., Unal, C., Unnikrishnan, C. S., Vagenas, E. C., Valageas, P., Vallisneri, M., Brand, J. Van den, Broeck, C. Van den, van de Meent, M., Vanhove, P., Varma, V., Veitch, J., Vercnocke, B., Verde, L., Vernieri, D., Vernizzi, F., Vicente, R., Vidotto, F., Visser, M., Vlah, Z., Vretinaris, S., Völkel, S., Wang, Q., Wang, Yu-Tong, Werner, M. C., Westernacher, J., Weygaert, R. v. d., Wiltshire, D., Wiseman, T., Wolf, P., Wu, K., Yamada, K., Yang, H., Yi, L., Yue, X., Yvon, D., Zilhão, M., Zimmerman, A., and Zumalacarregui, M.

Subjects
General Relativity and Quantum Cosmology
Abstract

In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental physics. Given the very broad range of topics that might be relevant to LISA, we present here a sample of what we view as particularly promising directions, based in part on the current research interests of the LISA scientific community in the area of fundamental physics. We organize these directions through a "science-first" approach that allows us to classify how LISA data can inform theoretical physics in a variety of areas. For each of these theoretical physics classes, we identify the sources that are currently expected to provide the principal contribution to our knowledge, and the areas that need further development. The classification presented here should not be thought of as cast in stone, but rather as a fluid framework that is amenable to change with the flow of new insights in theoretical physics., Comment: 22 pages, 1 figure, to appear in General Relativity and Gravitation

Published
2020
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2. Gravitational multipole moments from Noether charges

Author

Compère, G., Oliveri, R., and Seraj, A.

Subjects
High Energy Physics - Theory, Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology
Abstract

We define the mass and current multipole moments for an arbitrary theory of gravity in terms of canonical Noether charges associated with specific residual transformations in canonical harmonic gauge, which we call multipole symmetries. We show that our definition exactly matches Thorne's mass and current multipole moments in Einstein gravity, which are defined in terms of metric components. For radiative configurations, the total multipole charges -- including the contributions from the source and the radiation -- are given by surface charges at spatial infinity, while the source multipole moments are naturally identified by surface integrals in the near-zone or, alternatively, from a regularization of the Noether charges at null infinity. The conservation of total multipole charges is used to derive the variation of source multipole moments in the near-zone in terms of the flux of multipole charges at null infinity., Comment: v1: 22 pages + 13 pages of appendices, 1 figure; v2: published version in JHEP

Published
2017
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3. Self-similar accretion in thin disks around near-extremal black holes

Author

Compère, G. and Oliveri, R.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology, High Energy Physics - Theory
Abstract

Near-maximally spinning black holes display conformal symmetry in their near-horizon region, which is therefore the locus of critical phenomena. In this paper, we revisit the Novikov-Thorne accretion thin disk model and find a new self-similar radiation-dominated solution in the extremely high spin regime. Motivated by the self-consistency of the model, we require that matter flows at the sound speed at the innermost stable circular orbit (ISCO). We observe that, when the disk pressure is dominated by radiation at the ISCO, which occurs for the best-fitting Novikov-Thorne model of GRS 1915+105, the Shakura-Sunyaev viscosity parameter can be expressed in terms of the spin, mass accretion rate and radiative efficiency. We quantitatively describe how the exact thin disk solution approaches the self-similar solution in the vicinity of the ISCO and for increasing spins., Comment: 13 pages, 6 figures; v2 matches published version in MNRAS; v3: typos fixed, results unchanged

Published
2017
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4. Mass of Kerr-Newman Black Holes in an external magnetic field

Author

Astorino, M., Compère, G., Oliveri, R., and Vandevoorde, N.

Subjects
General Relativity and Quantum Cosmology
Abstract

The explicit solution for a Kerr-Newman black hole immersed in an external magnetic field, sometimes called the Melvin-Kerr-Newman black hole, has been derived by Ernst and Wild in 1976. In this paper, we clarify the first law and Smarr formula for black holes in a magnetic field. We then define the unique mass which is integrable and reduces to the Kerr-Newman mass in the absence of magnetic field. This defines the thermodynamic potentials of the black hole. Quite strikingly, the mass coincides with the standard Christodoulou-Ruffini mass of a black hole as a function of the entropy, angular momentum and electric charge., Comment: 21 pages; v2 matches published version

Published
2016
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5. Symplectic and Killing Symmetries of AdS$_3$ Gravity: Holographic vs Boundary Gravitons

Author

Compère, G., Mao, P., Seraj, A., and Sheikh-Jabbari, M. M.

Subjects
High Energy Physics - Theory
Abstract

The set of solutions to the AdS$_3$ Einstein gravity with Brown-Henneaux boundary conditions is known to be a family of metrics labeled by two arbitrary periodic functions, respectively left and right-moving. It turns out that there exists an appropriate presymplectic form which vanishes on-shell. This promotes this set of metrics to a phase space in which the Brown-Henneaux asymptotic symmetries become symplectic symmetries in the bulk of spacetime. Moreover, any element in the phase space admits two global Killing vectors. We show that the conserved charges associated with these Killing vectors commute with the Virasoro symplectic symmetry algebra, extending the Virasoro symmetry algebra with two $U(1)$ generators. We discuss that any element in the phase space falls into the coadjoint orbits of the Virasoro algebras and that each orbit is labeled by the $U(1)$ Killing charges. Upon setting the right-moving function to zero and restricting the choice of orbits, one can take a near-horizon decoupling limit which preserves a chiral half of the symplectic symmetries. Here we show two distinct but equivalent ways in which the chiral Virasoro symplectic symmetries in the near-horizon geometry can be obtained as a limit of the bulk symplectic symmetries., Comment: 39 pages, v2: a reference added, the version to appear in JHEP

Published
2015
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6. $E_{7(7)}$ invariant non-extremal entropy

Author

Compère, G. and Lekeu, V.

Subjects
High Energy Physics - Theory
Abstract

The entropy of generic non-extremal dyonic black holes in the STU model has been shown to admit a remarkably universal form. The missing invariant in the formula was recently identified by S\'arosi using the formalism of quantum entanglement as well as a higher dimensional embedding of the U-duality group. Here, we express the non-extremal black hole entropy in the STU model in terms of U-duality covariant tensors. We then provide the extension to the most general non-extremal black hole of ungauged $\mathcal N= 8$ supergravity using $E_{7(7)}$ invariants. We also conjecture a generalization for ungauged $\mathcal N = 2$ supergravity coupled to vector multiplets with arbitrary cubic prepotential. The most general rotating dyonic black hole solution of the STU model with all scalar moduli turned on is provided in an appendix., Comment: 25 pages, published version

Published
2015
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7. Near-horizon Extreme Kerr Magnetospheres

Author

Compère, G. and Oliveri, R.

Subjects
High Energy Physics - Theory, Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology
Abstract

Analytical solutions to force-free electrodynamics around black holes are fundamental for building simple models of accretion disk and jet dynamics. We present a (nonexhaustive) classification of complex highest-weight solutions to the force-free equations in the near-horizon region of the extremal Kerr black hole. Several classes of real magnetically dominated or null solutions, either axisymmetric or nonaxisymmetric, are described which admit finite energy and angular momentum with respect to the asymptotically flat observer. Subtleties related to the velocity of light surface in the near-horizon region are discussed., Comment: Erratum version, 50 pages, 6 figures

Published
2015
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8. Wiggling Throat of Extremal Black Holes

Author

Compère, G., Hajian, K., Seraj, A., and Sheikh-Jabbari, M. M.

Subjects
High Energy Physics - Theory, General Relativity and Quantum Cosmology
Abstract

We construct the classical phase space of geometries in the near-horizon region of vacuum extremal black holes as announced in [arXiv:1503.07861]. Motivated by the uniqueness theorems for such solutions and for perturbations around them, we build a family of metrics depending upon a single periodic function defined on the torus spanned by the $U(1)$ isometry directions. We show that this set of metrics is equipped with a consistent symplectic structure and hence defines a phase space. The phase space forms a representation of an infinite dimensional algebra of so-called symplectic symmetries. The symmetry algebra is an extension of the Virasoro algebra whose central extension is the black hole entropy. We motivate the choice of diffeomorphisms leading to the phase space and explicitly derive the symplectic structure, the algebra of symplectic symmetries and the corresponding conserved charges. We also discuss a formulation of these charges with a Liouville type stress-tensor on the torus defined by the $U(1)$ isometries and outline possible future directions., Comment: 56 pages, 3 figures

Published
2015
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9. Extremal Rotating Black Holes in the Near-Horizon Limit: Phase Space and Symmetry Algebra

Author

Compère, G., Hajian, K., Seraj, A., and Sheikh-Jabbari, M. M.

Subjects
High Energy Physics - Theory, General Relativity and Quantum Cosmology
Abstract

We construct the NHEG phase space, the classical phase space of Near-Horizon Extremal Geometries with fixed angular momenta and entropy, and with the largest symmetry algebra. We focus on vacuum solutions to $d$ dimensional Einstein gravity. Each element in the phase space is a geometry with $SL(2,\mathbb R)\times U(1)^{d-3}$ isometries which has vanishing $SL(2,\mathbb R)$ and constant $U(1)$ charges. We construct an on-shell vanishing symplectic structure, which leads to an infinite set of symplectic symmetries. In four spacetime dimensions, the phase space is unique and the symmetry algebra consists of the familiar Virasoro algebra, while in $d>4$ dimensions the symmetry algebra, the NHEG algebra, contains infinitely many Virasoro subalgebras. The nontrivial central term of the algebra is proportional to the black hole entropy. This phase space and in particular its symmetries might serve as a basis for a semiclassical description of extremal rotating black hole microstates., Comment: Published in PLB, 5 pages

Published
2015
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10. Generalized Smarr relation for Kerr AdS black holes from improved surface integrals

Author

Barnich, G. and Compere, G.

Subjects
General Relativity and Quantum Cosmology, High Energy Physics - Theory
Abstract

By using suitably improved surface integrals, we give a unified geometric derivation of the generalized Smarr relation for higher dimensional Kerr black holes which is valid both in flat and in anti-de Sitter backgrounds. The improvement of the surface integrals, which allows one to use them simultaneously at infinity and on the horizon, consists in integrating them along a path in solution space. Path independence of the improved charges is discussed and explicitly proved for the higher dimensional Kerr AdS black holes. It is also shown that the charges for these black holes can be correctly computed from the standard Hamiltonian or Lagrangian surface integrals., Comment: 21 pages Latex file, 1 figure; discussion on integrability rectified, typo in (2.14) corrected

Published
2004
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11. An Introduction to Free Higher-Spin Fields

Author

Bouatta, N., Compere, G., and Sagnotti, A.

Subjects
High Energy Physics - Theory
Abstract

In this article we begin by reviewing the (Fang-)Fronsdal construction and the non-local geometric equations with unconstrained gauge fields and parameters built by Francia and the senior author from the higher-spin curvatures of de Wit and Freedman. We then turn to the triplet structure of totally symmetric tensors that emerges from free String Field Theory in the $\alpha' \to 0$ limit and to its generalization to (A)dS backgrounds, and conclude with a discussion of a simple local compensator form of the field equations that displays the unconstrained gauge symmetry of the non-local equations. Based on the lectures presented by A. Sagnotti at the First Solvay Workshop on Higher-Spin Gauge Theories held in Brussels on May 12-14, 2004, Comment: 24 pages, Latex

Published
2004

15. New horizons for fundamental physics with LISA

Author

K. G. Arun, Enis Belgacem, Robert Benkel, Laura Bernard, Emanuele Berti, Gianfranco Bertone, Marc Besancon, Diego Blas, Christian G. Böhmer, Richard Brito, Gianluca Calcagni, Alejandro Cardenas-Avendaño, Katy Clough, Marco Crisostomi, Valerio De Luca, Daniela Doneva, Stephanie Escoffier, José María Ezquiaga, Pedro G. Ferreira, Pierre Fleury, Stefano Foffa, Gabriele Franciolini, Noemi Frusciante, Juan García-Bellido, Carlos Herdeiro, Thomas Hertog, Tanja Hinderer, Philippe Jetzer, Lucas Lombriser, Elisa Maggio, Michele Maggiore, Michele Mancarella, Andrea Maselli, Sourabh Nampalliwar, David Nichols, Maria Okounkova, Paolo Pani, Vasileios Paschalidis, Alvise Raccanelli, Lisa Randall, Sébastien Renaux-Petel, Antonio Riotto, Milton Ruiz, Alexander Saffer, Mairi Sakellariadou, Ippocratis D. Saltas, B. S. Sathyaprakash, Lijing Shao, Carlos F. Sopuerta, Thomas P. Sotiriou, Nikolaos Stergioulas, Nicola Tamanini, Filippo Vernizzi, Helvi Witek, Kinwah Wu, Kent Yagi, Stoytcho Yazadjiev, Nicolás Yunes, Miguel Zilhão, Niayesh Afshordi, Marie-Christine Angonin, Vishal Baibhav, Enrico Barausse, Tiago Barreiro, Nicola Bartolo, Nicola Bellomo, Ido Ben-Dayan, Eric A. Bergshoeff, Sebastiano Bernuzzi, Daniele Bertacca, Swetha Bhagwat, Béatrice Bonga, Lior M. Burko, Geoffrey Compére, Giulia Cusin, Antonio da Silva, Saurya Das, Claudia de Rham, Kyriakos Destounis, Ema Dimastrogiovanni, Francisco Duque, Richard Easther, Hontas Farmer, Matteo Fasiello, Stanislav Fisenko, Kwinten Fransen, Jörg Frauendiener, Jonathan Gair, László Árpád Gergely, Davide Gerosa, Leonardo Gualtieri, Wen-Biao Han, Aurelien Hees, Thomas Helfer, Jörg Hennig, Alexander C. Jenkins, Eric Kajfasz, Nemanja Kaloper, Vladimír Karas, Bradley J. Kavanagh, Sergei A. Klioner, Savvas M. Koushiappas, Macarena Lagos, Christophe Le Poncin-Lafitte, Francisco S. N. Lobo, Charalampos Markakis, Prado Martín-Moruno, C. J. A. P. Martins, Sabino Matarrese, Daniel R. Mayerson, José P. Mimoso, Johannes Noller, Nelson J. Nunes, Roberto Oliveri, Giorgio Orlando, George Pappas, Igor Pikovski, Luigi Pilo, Jiří Podolský, Geraint Pratten, Tomislav Prokopec, Hong Qi, Saeed Rastgoo, Angelo Ricciardone, Rocco Rollo, Diego Rubiera-Garcia, Olga Sergijenko, Stuart Shapiro, Deirdre Shoemaker, Alessandro Spallicci, Oleksandr Stashko, Leo C. Stein, Gianmassimo Tasinato, Andrew J. Tolley, Elias C. Vagenas, Stefan Vandoren, Daniele Vernieri, Rodrigo Vicente, Toby Wiseman, Valery I. Zhdanov, Miguel Zumalacárregui, UAM. Departamento de Física Teórica, Arun, K, Belgacem, E, Benkel, R, Bernard, L, Berti, E, Bertone, G, Besancon, M, Blas, D, Bohmer, C, Brito, R, Calcagni, G, Cardenas-Avendano, A, Clough, K, Crisostomi, M, De Luca, V, Doneva, D, Escoffier, S, Ezquiaga, J, Ferreira, P, Fleury, P, Foffa, S, Franciolini, G, Frusciante, N, Garcia-Bellido, J, Herdeiro, C, Hertog, T, Hinderer, T, Jetzer, P, Lombriser, L, Maggio, E, Maggiore, M, Mancarella, M, Maselli, A, Nampalliwar, S, Nichols, D, Okounkova, M, Pani, P, Paschalidis, V, Raccanelli, A, Randall, L, Renaux-Petel, S, Riotto, A, Ruiz, M, Saffer, A, Sakellariadou, M, Saltas, I, Sathyaprakash, B, Shao, L, Sopuerta, C, Sotiriou, T, Stergioulas, N, Tamanini, N, Vernizzi, F, Witek, H, Wu, K, Yagi, K, Yazadjiev, S, Yunes, N, Zilhao, M, Afshordi, N, Angonin, M, Baibhav, V, Barausse, E, Barreiro, T, Bartolo, N, Bellomo, N, Ben-Dayan, I, Bergshoeff, E, Bernuzzi, S, Bertacca, D, Bhagwat, S, Bonga, B, Burko, L, Compere, G, Cusin, G, da Silva, A, Das, S, de Rham, C, Destounis, K, Dimastrogiovanni, E, Duque, F, Easther, R, Farmer, H, Fasiello, M, Fisenko, S, Fransen, K, Frauendiener, J, Gair, J, Gergely, L, Gerosa, D, Gualtieri, L, Han, W, Hees, A, Helfer, T, Hennig, J, Jenkins, A, Kajfasz, E, Kaloper, N, Karas, V, Kavanagh, B, Klioner, S, Koushiappas, S, Lagos, M, Poncin-Lafitte, C, Lobo, F, Markakis, C, Martin-Moruno, P, Martins, C, Matarrese, S, Mayerson, D, Mimoso, J, Noller, J, Nunes, N, Oliveri, R, Orlando, G, Pappas, G, Pikovski, I, Pilo, L, Podolsky, J, Pratten, G, Prokopec, T, Qi, H, Rastgoo, S, Ricciardone, A, Rollo, R, Rubiera-Garcia, D, Sergijenko, O, Shapiro, S, Shoemaker, D, Spallicci, A, Stashko, O, Stein, L, Tasinato, G, Tolley, A, Vagenas, E, Vandoren, S, Vernieri, D, Vicente, R, Wiseman, T, Zhdanov, V, Zumalacarregui, M, Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique [Palaiseau] (CPHT), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des deux Infinis de Toulouse (L2IT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Systèmes de Référence Temps Espace (SYRTE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et chimie de l'environnement (LPCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), LISA, Arun, K. G., Belgacem, Eni, Benkel, Robert, Bernard, Laura, Berti, Emanuele, Bertone, Gianfranco, Besancon, Marc, Blas, Diego, B??hmer, Christian G., Brito, Richard, Calcagni, Gianluca, Cardenas-Avenda??o, Alejandro, Clough, Katy, Crisostomi, Marco, De Luca, Valerio, Doneva, Daniela, Escoffier, Stephanie, Mar??a Ezquiaga, Jos??, Ferreira, Pedro G., Fleury, Pierre, Foffa, Stefano, Franciolini, Gabriele, Frusciante, Noemi, Garc??a-Bellido, Juan, Herdeiro, Carlo, Hertog, Thoma, Hinderer, Tanja, Jetzer, Philippe, Lombriser, Luca, Maggio, Elisa, Maggiore, Michele, Mancarella, Michele, Maselli, Andrea, Nampalliwar, Sourabh, Nichols, David, Okounkova, Maria, Pani, Paolo, Paschalidis, Vasileio, Raccanelli, Alvise, Randall, Lisa, Renaux-Petel, S??bastien, Riotto, Antonio, Ruiz, Milton, Saffer, Alexander, Sakellariadou, Mairi, Saltas, Ippocratis D., Sathyaprakash, B. S., Shao, Lijing, Sopuerta, Carlos F., Sotiriou, Thomas P., Stergioulas, Nikolao, Tamanini, Nicola, Vernizzi, Filippo, Witek, Helvi, Wu, Kinwah, Yagi, Kent, Yazadjiev, Stoytcho, Yunes, Nicol??, Zilh??o, Miguel, Afshordi, Niayesh, Angonin, Marie-Christine, Baibhav, Vishal, Barausse, Enrico, Barreiro, Tiago, Bartolo, Nicola, Bellomo, Nicola, Ben-Dayan, Ido, Bergshoeff, Eric A., Bernuzzi, Sebastiano, Bertacca, Daniele, Bhagwat, Swetha, Bonga, B??atrice, Burko, Lior M., Comp??re, Geoffrey, Cusin, Giulia, da Silva, Antonio, Das, Saurya, de Rham, Claudia, Destounis, Kyriako, Dimastrogiovanni, Ema, Duque, Francisco, Easther, Richard, Farmer, Honta, Fasiello, Matteo, Fisenko, Stanislav, Fransen, Kwinten, Frauendiener, J??rg, Gair, Jonathan, rp??d Gergely, L??szl??, Gerosa, Davide, Gualtieri, Leonardo, Han, Wen-Biao, Hees, Aurelien, Helfer, Thoma, Hennig, J??rg, Jenkins, Alexander C., Kajfasz, Eric, Kaloper, Nemanja, Karas, Vladim??r, Kavanagh, Bradley J., Klioner, Sergei A., Koushiappas, Savvas M., Lagos, Macarena, Le Poncin-Lafitte, Christophe, Lobo, Francisco S. N., Markakis, Charalampo, Mart??n-Moruno, Prado, Martins, C. J. A. P., Matarrese, Sabino, Mayerson, Daniel R., Mimoso, Jos?? P., Noller, Johanne, Nunes, Nelson J., Oliveri, Roberto, Orlando, Giorgio, Pappas, George, Pikovski, Igor, Pilo, Luigi, Podolsk??, Ji????, Pratten, Geraint, Prokopec, Tomislav, Qi, Hong, Rastgoo, Saeed, Ricciardone, Angelo, Rollo, Rocco, Rubiera-Garcia, Diego, Sergijenko, Olga, Shapiro, Stuart, Shoemaker, Deirdre, Spallicci, Alessandro, Stashko, Oleksandr, Stein, Leo C., Tasinato, Gianmassimo, Tolley, Andrew J., Vagenas, Elias C., Vandoren, Stefan, Vernieri, Daniele, Vicente, Rodrigo, Wiseman, Toby, Zhdanov, Valery I., Zumalac??rregui, Miguel, National Science Foundation (US), National Aeronautics and Space Administration (US), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Generalitat de Catalunya, European Research Council, European Commission, Fundação para a Ciência e a Tecnologia (Portugal), Ministero dell'Istruzione, dell'Università e della Ricerca, Fundación 'la Caixa', Czech Science Foundation, Science and Technology Facilities Council (UK), GRAPPA (ITFA, IoP, FNWI), and Astroparticle Physics (IHEF, IoP, FNWI)

Subjects
Astrofísica, PROTOPLANET MIGRATION, Física-Modelos matemáticos, Physics and Astronomy (miscellaneous), gr-qc, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), GRAVITATIONAL-WAVES, horizon, Fundamental physic, General Relativity and Quantum Cosmology, Physics, Particles & Fields, Gravitational waves, LIGO (Observatory), Tests of general relativity, Settore FIS/05 - Astronomia e Astrofisica, DARK-MATTER, Física matemática, KOZAI MECHANISM, High Energy Physics, GENERAL-RELATIVITY, Fundamental physics, LISA, PRIMORDIAL BLACK-HOLES, Science & Technology, General Relativity and Cosmology, 83CXX, Physics, gravitation: interaction, gravitational radiation, Física, Compact, QUANTUM-GRAVITY, Physical Sciences, Astronomia, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], fundamental physics, gravitational waves, test of general relativity, MODIFIED GRAVITY, Gravitational wave, MULTIPOLE MOMENTS, HUBBLE CONSTANT
Abstract

K. G. Arun et al., The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders about the fundamental theory of nature at play in the extreme gravity regime, where the gravitational interaction is both strong and dynamical. In this white paper, the Fundamental Physics Working Group of the LISA Consortium summarizes the current topics in fundamental physics where LISA observations of gravitational waves can be expected to provide key input. We provide the briefest of reviews to then delineate avenues for future research directions and to discuss connections between this working group, other working groups and the consortium work package teams. These connections must be developed for LISA to live up to its science potential in these areas., E. Berti is supported by NSF Grants No. PHY-1912550 and AST-2006538, NASA ATP Grants No. 17-ATP17-0225 and 19-ATP19-0051, NSF-XSEDE Grant No. PHY-090003, and NSF Grant PHY-20043. D. Blas is supported by a ‘Ayuda Beatriz Galindo Senior’ from the Spanish ‘Ministerio de Universidades’, grant BG20/00228. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. The research leading of to these results has received funding from the Spanish Ministry of Science and Innovation (PID2020-115845GB-I00/AEI/10.13039/501100011033). K. Clough is supported by funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 693024). A. Cárdenas-Avendaño acknowledges funding from the Fundación Universitaria Konrad Lorenz (Project 5INV1) and from Will and Kacie Snellings. M. Crisostomi and E. Barausse are supported by the European Union’s H2020 ERC Consolidator Grant “GRavity from Astrophysical to Microscopic Scales” (Grant No. GRAMS-815673). P. Fleury received the support of a fellowship from “la Caixa” Foundation (ID 100010434). The fellowship code is LCF/BQ/PI19/11690018. C. Herdeiro thanks the support of the Center for Research and Development in Mathematics and Applications (CIDMA) through the Portuguese Foundation for Science and Technology (FCT - Fundação para a Ciência e a Tecnologia), references UIDB/04106/2020 and UIDP/04106/2020, the projects PTDC/FIS-OUT/28407/2017, CERN/FIS-PAR/0027/2019, PTDC/FIS-AST/3041/2020 and the European Union’s Horizon 2020 research and innovation (RISE) programme H2020-MSCA-RISE-2017 Grant No. FunFiCO-777740. P. Pani and E. Maggio acknowledge financial support provided under the European Union’s H2020 ERC, Starting Grant agreement no. DarkGRA–757480, and under the MIUR PRIN and FARE programmes (GW-NEXT, CUP: B84I20000100001), and support from the Amaldi Research Center funded by the MIUR program “Dipartimento di Eccellenza” (CUP: B81I18001170001). N.Frusciante was supported by Fundação para a Ciência e a Tecnologia (FCT) through the research grants UIDB/04434/2020, UIDP/04434/2020, PTDC/FIS-OUT/29048/2017, CERN/FIS-PAR/0037/2019, the FCT project “CosmoTests—Cosmological tests of gravity theories beyond General Relativity” with ref. number CEECIND/00017/2018 and the FCT project “BEYLA –BEYond LAmbda” with ref. number PTDC/FIS-AST/0054/2021. L.Lombriser was supported by a Swiss National Science Foundation Professorship grant (No. 170547). S.N. acknowledges support from the Alexander von Humboldt Foundation. D.N. acknowledges support from the NSF Grant No. PHY-2011784. R.B. acknowledges financial support from FCT – Fundação para a Ciência e a Tecnologia, I.P., under the Scientific Employment Stimulus - Individual Call - 2020.00470.CEECIND. V. Paschalidis acknowledges support from NSF Grant PHY-1912619 and NASA Grant 80NSSC20K1542 to the University of Arizona. B.S.S. is supported by NSF grants No. AST-2006384 and PHY-2012083. C.F.S. is supported by contracts ESP2017-90084-P and PID2019-106515GB-I00/AEI/10.13039/501100011033 (Spanish Ministry of Science and Innovation) and 2017-SGR-1469 (AGAUR, Generalitat de Catalunya). T. P. S. acknowledges partial support from the STFC Consolidated Grant No. ST/P000703/1. M. Ruiz acknowledges support from NASA Grant 80NSSC17K0070 to the University of Illinois at Urbana-Champaign. I.D. Saltas is supported by the Czech Science Foundation GAČR, Grant No. 21-16583M. N. Stergioulas is supported by the ESA Prodex grant PEA:4000132310 “LISA Stochastic Signals Analysis Pipeline”. F.V. acknowledges partial support from CNES. K.Y. acknowledges support from NSF Grant PHY-1806776, NASA Grant 80NSSC20K0523, a Sloan Foundation Research Fellowship and the Owens Family Foundation. K.Y. would like to also acknowledge support by the COST Action GWverse CA16104 and JSPS KAKENHI Grants No. JP17H06358. N. Yunes acknowledges support from NASA Grants No. NNX16AB98G, 80NSSC17M0041 and 80NSSC18K1352, NSF Award No. 1759615, and the Simons Foundation through MPS Award Number 896696. D.D. acknowledge financial support via an Emmy Noether Research Group funded by the German Research Foundation (DFG) under grant no. DO 1771/1-1.

Published
2022

16. Black holes, gravitational waves and fundamental physics: a roadmap

Author

Leor Barack, Vitor Cardoso, Samaya Nissanke, Thomas P Sotiriou, Abbas Askar, Chris Belczynski, Gianfranco Bertone, Edi Bon, Diego Blas, Richard Brito, Tomasz Bulik, Clare Burrage, Christian T Byrnes, Chiara Caprini, Masha Chernyakova, Piotr Chruściel, Monica Colpi, Valeria Ferrari, Daniele Gaggero, Jonathan Gair, Juan García-Bellido, S F Hassan, Lavinia Heisenberg, Martin Hendry, Ik Siong Heng, Carlos Herdeiro, Tanja Hinderer, Assaf Horesh, Bradley J Kavanagh, Bence Kocsis, Michael Kramer, Alexandre Le Tiec, Chiara Mingarelli, Germano Nardini, Gijs Nelemans, Carlos Palenzuela, Paolo Pani, Albino Perego, Edward K Porter, Elena M Rossi, Patricia Schmidt, Alberto Sesana, Ulrich Sperhake, Antonio Stamerra, Leo C Stein, Nicola Tamanini, Thomas M Tauris, L Arturo Urena-López, Frederic Vincent, Marta Volonteri, Barry Wardell, Norbert Wex, Kent Yagi, Tiziano Abdelsalhin, Miguel Ángel Aloy, Pau Amaro-Seoane, Lorenzo Annulli, Manuel Arca-Sedda, Ibrahima Bah, Enrico Barausse, Elvis Barakovic, Robert Benkel, Charles L Bennett, Laura Bernard, Sebastiano Bernuzzi, Christopher P L Berry, Emanuele Berti, Miguel Bezares, Jose Juan Blanco-Pillado, Jose Luis Blázquez-Salcedo, Matteo Bonetti, Mateja Bošković, Zeljka Bosnjak, Katja Bricman, Bernd Brügmann, Pedro R Capelo, Sante Carloni, Pablo Cerdá-Durán, Christos Charmousis, Sylvain Chaty, Aurora Clerici, Andrew Coates, Marta Colleoni, Lucas G Collodel, Geoffrey Compère, William Cook, Isabel Cordero-Carrión, Miguel Correia, Álvaro de la Cruz-Dombriz, Viktor G Czinner, Kyriakos Destounis, Kostas Dialektopoulos, Daniela Doneva, Massimo Dotti, Amelia Drew, Christopher Eckner, James Edholm, Roberto Emparan, Recai Erdem, Miguel Ferreira, Pedro G Ferreira, Andrew Finch, Jose A Font, Nicola Franchini, Kwinten Fransen, Dmitry Gal’tsov, Apratim Ganguly, Davide Gerosa, Kostas Glampedakis, Andreja Gomboc, Ariel Goobar, Leonardo Gualtieri, Eduardo Guendelman, Francesco Haardt, Troels Harmark, Filip Hejda, Thomas Hertog, Seth Hopper, Sascha Husa, Nada Ihanec, Taishi Ikeda, Amruta Jaodand, Philippe Jetzer, Xisco Jimenez-Forteza, Marc Kamionkowski, David E Kaplan, Stelios Kazantzidis, Masashi Kimura, Shiho Kobayashi, Kostas Kokkotas, Julian Krolik, Jutta Kunz, Claus Lämmerzahl, Paul Lasky, José P S Lemos, Jackson Levi Said, Stefano Liberati, Jorge Lopes, Raimon Luna, Yin-Zhe Ma, Elisa Maggio, Alberto Mangiagli, Marina Martinez Montero, Andrea Maselli, Lucio Mayer, Anupam Mazumdar, Christopher Messenger, Brice Ménard, Masato Minamitsuji, Christopher J Moore, David Mota, Sourabh Nampalliwar, Andrea Nerozzi, David Nichols, Emil Nissimov, Martin Obergaulinger, Niels A Obers, Roberto Oliveri, George Pappas, Vedad Pasic, Hiranya Peiris, Tanja Petrushevska, Denis Pollney, Geraint Pratten, Nemanja Rakic, Istvan Racz, Miren Radia, Fethi M Ramazanoğlu, Antoni Ramos-Buades, Guilherme Raposo, Marek Rogatko, Roxana Rosca-Mead, Dorota Rosinska, Stephan Rosswog, Ester Ruiz-Morales, Mairi Sakellariadou, Nicolás Sanchis-Gual, Om Sharan Salafia, Anuradha Samajdar, Alicia Sintes, Majda Smole, Carlos Sopuerta, Rafael Souza-Lima, Marko Stalevski, Nikolaos Stergioulas, Chris Stevens, Tomas Tamfal, Alejandro Torres-Forné, Sergey Tsygankov, Kıvanç İ Ünlütürk, Rosa Valiante, Maarten van de Meent, José Velhinho, Yosef Verbin, Bert Vercnocke, Daniele Vernieri, Rodrigo Vicente, Vincenzo Vitagliano, Amanda Weltman, Bernard Whiting, Andrew Williamson, Helvi Witek, Aneta Wojnar, Kadri Yakut, Haopeng Yan, Stoycho Yazadjiev, Gabrijela Zaharijas, Miguel Zilhão, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut des Hautes Etudes Scientifiques (IHES), IHES, Laboratoire Univers et Théories (LUTH (UMR_8102)), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut des Hautes Études Scientifiques (IHES), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Barack, L., Cardoso, V., Nissanke, S., Sotiriou, T. P., Askar, A., Belczynski, C., Bertone, G., Bon, E., Blas, D., Brito, R., Bulik, T., Burrage, C., Byrnes, C. T., Caprini, C., Chernyakova, M., Chrusciel, P., Colpi, M., Ferrari, V., Gaggero, D., Gair, J., Garcia-Bellido, J., Hassan, S. F., Heisenberg, L., Hendry, M., Heng, I. S., Herdeiro, C., Hinderer, T., Horesh, A., Kavanagh, B. J., Kocsis, B., Kramer, M., Le Tiec, A., Mingarelli, C., Nardini, G., Nelemans, G., Palenzuela, C., Pani, P., Perego, A., Porter, E. K., Rossi, E. M., Schmidt, P., Sesana, A., Sperhake, U., Stamerra, A., Stein, L. C., Tamanini, N., Tauris, T. M., Urena-Lopez, L. A., Vincent, F., Volonteri, M., Wardell, B., Wex, N., Yagi, K., Abdelsalhin, T., Aloy, M. A., Amaro-Seoane, P., Annulli, L., Arca-Sedda, M., Bah, I., Barausse, E., Barakovic, E., Benkel, R., Bennett, C. L., Bernard, L., Bernuzzi, S., Berry, C. P. L., Berti, E., Bezares, M., Blanco-Pillado, J. J., Blazquez-Salcedo, J. L., Bonetti, M., Boskovic, M., Bosnjak, Z., Bricman, K., Brugmann, B., Capelo, P. R., Carloni, S., Cerda-Duran, P., Charmousis, C., Chaty, S., Clerici, A., Coates, A., Colleoni, M., Collodel, L. G., Compere, G., Cook, W., Cordero-Carrion, I., Correia, M., De La Cruz-Dombriz, A., Czinner, V. G., Destounis, K., Dialektopoulos, K., Doneva, D., Dotti, M., Drew, A., Eckner, C., Edholm, J., Emparan, R., Erdem, R., Ferreira, M., Ferreira, P. G., Finch, A., Font, J. A., Franchini, N., Fransen, K., Gal'Tsov, D., Ganguly, A., Gerosa, D., Glampedakis, K., Gomboc, A., Goobar, A., Gualtieri, L., Guendelman, E., Haardt, F., Harmark, T., Hejda, F., Hertog, T., Hopper, S., Husa, S., Ihanec, N., Ikeda, T., Jaodand, A., Jetzer, P., Jimenez-Forteza, X., Kamionkowski, M., Kaplan, D. E., Kazantzidis, S., Kimura, M., Kobayashi, S., Kokkotas, K., Krolik, J., Kunz, J., Lammerzahl, C., Lasky, P., Lemos, J. P. S., Levi Said, J., Liberati, S., Lopes, J., Luna, R., Ma, Y. -Z., Maggio, E., Mangiagli, A., Montero, M. M., Maselli, A., Mayer, L., Mazumdar, A., Messenger, C., Menard, B., Minamitsuji, M., Moore, C. J., Mota, D., Nampalliwar, S., Nerozzi, A., Nichols, D., Nissimov, E., Obergaulinger, M., Obers, N. A., Oliveri, R., Pappas, G., Pasic, V., Peiris, H., Petrushevska, T., Pollney, D., Pratten, G., Rakic, N., Racz, I., Radia, M., Ramazanoglu, F. M., Ramos-Buades, A., Raposo, G., Rogatko, M., Rosca-Mead, R., Rosinska, D., Rosswog, S., Ruiz-Morales, E., Sakellariadou, M., Sanchis-Gual, N., Sharan Salafia, O., Samajdar, A., Sintes, A., Smole, M., Sopuerta, C., Souza-Lima, R., Stalevski, M., Stergioulas, N., Stevens, C., Tamfal, T., Torres-Forne, A., Tsygankov, S., I Unluturk, Ki., Valiante, R., Van De Meent, M., Velhinho, J., Verbin, Y., Vercnocke, B., Vernieri, D., Vicente, R., Vitagliano, V., Weltman, A., Whiting, B., Williamson, A., Witek, H., Wojnar, A., Yakut, K., Yan, H., Yazadjiev, S., Zaharijas, G., Zilhao, M., Gravitation and Astroparticle Physics Amsterdam, GRAPPA (ITFA, IoP, FNWI), IoP (FNWI), High Energy Astrophys. & Astropart. Phys (API, FNWI), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Sperhake, Ulrich [0000-0002-3134-7088], Drew, Amelia [0000-0001-8252-602X], Radia, Miren [0000-0001-8861-2025], Apollo - University of Cambridge Repository, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Ege Üniversitesi, Barack, L, Cardoso, V, Nissanke, S, Sotiriou, T, Askar, A, Belczynski, C, Bertone, G, Bon, E, Blas, D, Brito, R, Bulik, T, Burrage, C, Byrnes, C, Caprini, C, Chernyakova, M, Chruściel, P, Colpi, M, Ferrari, V, Gaggero, D, Gair, J, García-Bellido, J, Hassan, S, Heisenberg, L, Hendry, M, Heng, I, Herdeiro, C, Hinderer, T, Horesh, A, Kavanagh, B, Kocsis, B, Kramer, M, Le Tiec, A, Mingarelli, C, Nardini, G, Nelemans, G, Palenzuela, C, Pani, P, Perego, A, Porter, E, Rossi, E, Schmidt, P, Sesana, A, Sperhake, U, Stamerra, A, Stein, L, Tamanini, N, Tauris, T, Urena-López, L, Vincent, F, Volonteri, M, Wardell, B, Wex, N, Yagi, K, Abdelsalhin, T, Aloy, M, Amaro-Seoane, P, Annulli, L, Arca-Sedda, M, Bah, I, Barausse, E, Barakovic, E, Benkel, R, Bennett, C, Bernard, L, Bernuzzi, S, Berry, C, Berti, E, Bezares, M, Blanco-Pillado, J, Blázquez-Salcedo, J, Bonetti, M, Bošković, M, Bosnjak, Z, Bricman, K, Brügmann, B, Capelo, P, Carloni, S, Cerdá-Durán, P, Charmousis, C, Chaty, S, Clerici, A, Coates, A, Colleoni, M, Collodel, L, Compère, G, Cook, W, Cordero-Carrión, I, Correia, M, de la Cruz-Dombriz, Á, Czinner, V, Destounis, K, Dialektopoulos, K, Doneva, D, Dotti, M, Drew, A, Eckner, C, Edholm, J, Emparan, R, Erdem, R, Ferreira, M, Ferreira, P, Finch, A, Font, J, Franchini, N, Fransen, K, Gal’Tsov, D, Ganguly, A, Gerosa, D, Glampedakis, K, Gomboc, A, Goobar, A, Gualtieri, L, Guendelman, E, Haardt, F, Harmark, T, Hejda, F, Hertog, T, Hopper, S, Husa, S, Ihanec, N, Ikeda, T, Jaodand, A, Jetzer, P, Jimenez-Forteza, X, Kamionkowski, M, Kaplan, D, Kazantzidis, S, Kimura, M, Kobayashi, S, Kokkotas, K, Krolik, J, Kunz, J, Lämmerzahl, C, Lasky, P, Lemos, J, Levi Said, J, Liberati, S, Lopes, J, Luna, R, Ma, Y, Maggio, E, Mangiagli, A, Montero, M, Maselli, A, Mayer, L, Mazumdar, A, Messenger, C, Ménard, B, Minamitsuji, M, Moore, C, Mota, D, Nampalliwar, S, Nerozzi, A, Nichols, D, Nissimov, E, Obergaulinger, M, Obers, N, Oliveri, R, Pappas, G, Pasic, V, Peiris, H, Petrushevska, T, Pollney, D, Pratten, G, Rakic, N, Racz, I, Radia, M, Ramazanoğlu, F, Ramos-Buades, A, Raposo, G, Rogatko, M, Rosca-Mead, R, Rosinska, D, Rosswog, S, Ruiz-Morales, E, Sakellariadou, M, Sanchis-Gual, N, Sharan Salafia, O, Samajdar, A, Sintes, A, Smole, M, Sopuerta, C, Souza-Lima, R, Stalevski, M, Stergioulas, N, Stevens, C, Tamfal, T, Torres-Forné, A, Tsygankov, S, İ Ünlütürk, K, Valiante, R, van de Meent, M, Velhinho, J, Verbin, Y, Vercnocke, B, Vernieri, D, Vicente, R, Vitagliano, V, Weltman, A, Whiting, B, Williamson, A, Witek, H, Wojnar, A, Yakut, K, Yan, H, Yazadjiev, S, Zaharijas, G, and Zilhão, M

Subjects
High Energy Physics - Theory, cosmological model, Physics and Astronomy (miscellaneous), Event horizon, Astronomy, 01 natural sciences, General Relativity and Quantum Cosmology, Cosmology, Physics, Particles & Fields, Gravitation, High Energy Physics::Theory, black hole: formation, Vacuum energy, black hole, general relativity, NEUTRON-STAR, GENERAL-RELATIVITY, dark energy, STAR CLUSTER SIMULATIONS, gravitational wave, QC, QB, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, astro-ph.HE, Quantum Science & Technology, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], hep-th, source modelling, BRANS-DICKE THEORY, fundamental physic, gravitational waves, QUASI-NORMAL MODES, Physical Sciences, birth and evolution of black holes, black holes, fundamental physics, gravitational-wave astronomy, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], HIGH-REDSHIFT FORMATION, Astrophysics - High Energy Astrophysical Phenomena, SCALAR-TENSOR THEORIES, General relativity, media_common.quotation_subject, gr-qc, Physics, Multidisciplinary, birth and evolution of black hole, FOS: Physical sciences, ST/R00045X/1, General Relativity and Quantum Cosmology (gr-qc), Astronomy & Astrophysics, gravitational radiation: direct detection, horizon, vacuum state: energy, Theoretical physics, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, inflation, 010306 general physics, STFC, Science & Technology, 010308 nuclear & particles physics, Gravitational wave, Physique, gravitational radiation, RCUK, ST/P000703/1, R-PROCESS NUCLEOSYNTHESIS, Astronomie, singularity, Universe, High Energy Physics - Theory (hep-th), gravitation, black hole: model, TIMING ARRAY LIMITS, Dark energy, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], X-RAY BINARIES
Abstract

The grand challenges of contemporary fundamental physics-dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-all involve gravity as a key component. And of all gravitational phenomena, black holes stand out in their elegant simplicity, while harbouring some of the most remarkable predictions of General Relativity: event horizons, singularities and ergoregions. The hitherto invisible landscape of the gravitational Universe is being unveiled before our eyes: the historical direct detection of gravitational waves by the LIGO-Virgo collaboration marks the dawn of a new era of scientific exploration. Gravitational-wave astronomy will allow us to test models of black hole formation, growth and evolution, as well as models of gravitational-wave generation and propagation. It will provide evidence for event horizons and ergoregions, test the theory of General Relativity itself, and may reveal the existence of new fundamental fields. The synthesis of these results has the potential to radically reshape our understanding of the cosmos and of the laws of Nature. The purpose of this work is to present a concise, yet comprehensive overview of the state of the art in the relevant fields of research, summarize important open problems, and lay out a roadmap for future progress. This write-up is an initiative taken within the framework of the European Action on 'Black holes, Gravitational waves and Fundamental Physics'., SCOPUS: re.j, info:eu-repo/semantics/published

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