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1. EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

Author

Batista, R. Alves, Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž., Bringmann, T., Burrage, C., Bustamante, M., Bustillo, J. Calderón, Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Said, J. Levi, Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Bertolami, M. M. Miller, Millington, P., Moesta, P., Nippel, K., Niro, V., O'Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Khalifeh, A. Rida, Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., van Vliet, A., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., and Zeng, M.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the direct detection of gravitational waves with LIGO and Virgo, and many others. This white paper is the result of a collaborative effort that involved hundreds of theoretical astroparticle physicists and cosmologists, under the coordination of the European Consortium for Astroparticle Theory (EuCAPT). Addressed to the whole astroparticle physics community, it explores upcoming theoretical opportunities and challenges for our field of research, with particular emphasis on the possible synergies among different subfields, and the prospects for solving the most fundamental open questions with multi-messenger observations., Comment: White paper of the European Consortium for Astroparticle Theory (EuCAPT). 135 authors, 400 endorsers, 133 pages, 1382 references

Published
2021

2. Imprint of DESI fiber assignment on the anisotropic power spectrum of emission line galaxies

Author

Pinol, L, Cahn, RN, Hand, N, Seljak, U, and White, M

Subjects
cosmological simulations, power spectrum, redshift surveys, astro-ph.CO, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

The Dark Energy Spectroscopic Instrument (DESI), a multiplexed fiber-fed spectrograph, is a Stage-IV ground-based dark energy experiment aiming to measure redshifts for 29 million Emission-Line Galaxies (ELG), 4 million Luminous Red Galaxies (LRG), and 2 million Quasi-Stellar Objects (QSO). The survey design includes a pattern of tiling on the sky, the locations of the fiber positioners in the focal plane of the telescope, and an observation strategy determined by a fiber assignment algorithm that optimizes the allocation of fibers to targets. This strategy allows a given region to be covered on average five times for a five-year survey, with a typical variation of about 1.5 about the mean, which imprints a spatially-dependent pattern on the galaxy clustering. We investigate the systematic effects of the fiber assignment coverage on the anisotropic galaxy clustering of ELGs and show that, in the absence of any corrections, it leads to discrepancies of order ten percent on large scales for the power spectrum multipoles. We introduce a method where objects in a random catalog are assigned a coverage, and the mean density is separately computed for each coverage factor. We show that this method reduces, but does not eliminate the effect. We next investigate the angular dependence of the contaminated signal, arguing that it is mostly localized to purely transverse modes. We demonstrate that the cleanest way to remove the contaminating signal is to perform an analysis of the anisotropic power spectrum P(k,μ) and remove the lowest μ bin, leaving μ > 0 modes accurate at the few-percent level. Here, μ is the cosine of the angle between the line-of-sight and the direction of K→. We also investigate two alternative definitions of the random catalog and show that they are comparable but less effective than the coverage randoms method.

Published
2017

3. Cosmology with the Laser Interferometer Space Antenna

Author

Auclair, P, Bacon, D, Baker, T, Barreiro, T, Bartolo, N, Belgacem, E, Bellomo, N, Ben-Dayan, I, Bertacca, D, Besancon, M, Blanco-Pillado, J, Blas, D, Boileau, G, Calcagni, G, Caldwell, R, Caprini, C, Carbone, C, Chang, C, Chen, H, Christensen, N, Clesse, S, Comelli, D, Congedo, G, Contaldi, C, Crisostomi, M, Croon, D, Cui, Y, Cusin, G, Cutting, D, Dalang, C, De Luca, V, Pozzo, W, Desjacques, V, Dimastrogiovanni, E, Dorsch, G, Ezquiaga, J, Fasiello, M, Figueroa, D, Flauger, R, Franciolini, G, Frusciante, N, Fumagalli, J, Garcia-Bellido, J, Gould, O, Holz, D, Iacconi, L, Jain, R, Jenkins, A, Jinno, R, Joana, C, Karnesis, N, Konstandin, T, Koyama, K, Kozaczuk, J, Kuroyanagi, S, Laghi, D, Lewicki, M, Lombriser, L, Madge, E, Maggiore, M, Malhotra, A, Mancarella, M, Mandic, V, Mangiagli, A, Matarrese, S, Mazumdar, A, Mukherjee, S, Musco, I, Nardini, G, No, J, Papanikolaou, T, Peloso, M, Pieroni, M, Pilo, L, Raccanelli, A, Renaux-Petel, S, Renzini, A, Ricciardone, A, Riotto, A, Romano, J, Rollo, R, Pol, A, Morales, E, Sakellariadou, M, Saltas, I, Scalisi, M, Schmitz, K, Schwaller, P, Sergijenko, O, Servant, G, Simakachorn, P, Sorbo, L, Sousa, L, Speri, L, Steer, D, Tamanini, N, Tasinato, G, Torrado, J, Unal, C, Vennin, V, Vernieri, D, Vernizzi, F, Volonteri, M, Wachter, J, Wands, D, Witkowski, L, Zumalacarregui, M, Annis, J, Ares, F, Avelino, P, Avgoustidis, A, Barausse, E, Bonilla, A, Bonvin, C, Bosso, P, Calabrese, M, Caliskan, M, Cembranos, J, Chala, M, Chernoff, D, Clough, K, Criswell, A, Das, S, Silva, A, Dayal, P, Domcke, V, Durrer, R, Easther, R, Escoffier, S, Ferrans, S, Fryer, C, Gair, J, Gordon, C, Hendry, M, Hindmarsh, M, Hooper, D, Kajfasz, E, Kopp, J, Koushiappas, S, Kumar, U, Kunz, M, Lagos, M, Lilley, M, Lizarraga, J, Lobo, F, Maleknejad, A, Martins, C, Meerburg, P, Meyer, R, Mimoso, J, Nesseris, S, Nunes, N, Oikonomou, V, Orlando, G, Ozsoy, O, Pacucci, F, Palmese, A, Petiteau, A, Pinol, L, Zwart, S, Pratten, G, Prokopec, T, Quenby, J, Rastgoo, S, Roest, D, Rummukainen, K, Schimd, C, Secroun, A, Sesana, A, Sopuerta, C, Tereno, I, Tolley, A, Urrestilla, J, Vagenas, E, van de Vis, J, van de Weygaert, R, Wardell, B, Weir, D, White, G, Swiezewska, B, Zhdanov, V, Auclair P., Bacon D., Baker T., Barreiro T., Bartolo N., Belgacem E., Bellomo N., Ben-Dayan I., Bertacca D., Besancon M., Blanco-Pillado J. J., Blas D., Boileau G., Calcagni G., Caldwell R., Caprini C., Carbone C., Chang C. -F., Chen H. -Y., Christensen N., Clesse S., Comelli D., Congedo G., Contaldi C., Crisostomi M., Croon D., Cui Y., Cusin G., Cutting D., Dalang C., De Luca V., Pozzo W. D., Desjacques V., Dimastrogiovanni E., Dorsch G. C., Ezquiaga J. M., Fasiello M., Figueroa D. G., Flauger R., Franciolini G., Frusciante N., Fumagalli J., Garcia-Bellido J., Gould O., Holz D., Iacconi L., Jain R. K., Jenkins A. C., Jinno R., Joana C., Karnesis N., Konstandin T., Koyama K., Kozaczuk J., Kuroyanagi S., Laghi D., Lewicki M., Lombriser L., Madge E., Maggiore M., Malhotra A., Mancarella M., Mandic V., Mangiagli A., Matarrese S., Mazumdar A., Mukherjee S., Musco I., Nardini G., No J. M., Papanikolaou T., Peloso M., Pieroni M., Pilo L., Raccanelli A., Renaux-Petel S., Renzini A. I., Ricciardone A., Riotto A., Romano J. D., Rollo R., Pol A. R., Morales E. R., Sakellariadou M., Saltas I. D., Scalisi M., Schmitz K., Schwaller P., Sergijenko O., Servant G., Simakachorn P., Sorbo L., Sousa L., Speri L., Steer D. A., Tamanini N., Tasinato G., Torrado J., Unal C., Vennin V., Vernieri D., Vernizzi F., Volonteri M., Wachter J. M., Wands D., Witkowski L. T., Zumalacarregui M., Annis J., Ares F. R., Avelino P. P., Avgoustidis A., Barausse E., Bonilla A., Bonvin C., Bosso P., Calabrese M., Caliskan M., Cembranos J. A. R., Chala M., Chernoff D., Clough K., Criswell A., Das S., Silva A., Dayal P., Domcke V., Durrer R., Easther R., Escoffier S., Ferrans S., Fryer C., Gair J., Gordon C., Hendry M., Hindmarsh M., Hooper D. C., Kajfasz E., Kopp J., Koushiappas S. M., Kumar U., Kunz M., Lagos M., Lilley M., Lizarraga J., Lobo F. S. N., Maleknejad A., Martins C. J. A. P., Meerburg P. D., Meyer R., Mimoso J. P., Nesseris S., Nunes N., Oikonomou V., Orlando G., Ozsoy O., Pacucci F., Palmese A., Petiteau A., Pinol L., Zwart S. P., Pratten G., Prokopec T., Quenby J., Rastgoo S., Roest D., Rummukainen K., Schimd C., Secroun A., Sesana A., Sopuerta C. F., Tereno I., Tolley A., Urrestilla J., Vagenas E. C., van de Vis J., van de Weygaert R., Wardell B., Weir D. J., White G., Swiezewska B., Zhdanov V. I., Auclair, P, Bacon, D, Baker, T, Barreiro, T, Bartolo, N, Belgacem, E, Bellomo, N, Ben-Dayan, I, Bertacca, D, Besancon, M, Blanco-Pillado, J, Blas, D, Boileau, G, Calcagni, G, Caldwell, R, Caprini, C, Carbone, C, Chang, C, Chen, H, Christensen, N, Clesse, S, Comelli, D, Congedo, G, Contaldi, C, Crisostomi, M, Croon, D, Cui, Y, Cusin, G, Cutting, D, Dalang, C, De Luca, V, Pozzo, W, Desjacques, V, Dimastrogiovanni, E, Dorsch, G, Ezquiaga, J, Fasiello, M, Figueroa, D, Flauger, R, Franciolini, G, Frusciante, N, Fumagalli, J, Garcia-Bellido, J, Gould, O, Holz, D, Iacconi, L, Jain, R, Jenkins, A, Jinno, R, Joana, C, Karnesis, N, Konstandin, T, Koyama, K, Kozaczuk, J, Kuroyanagi, S, Laghi, D, Lewicki, M, Lombriser, L, Madge, E, Maggiore, M, Malhotra, A, Mancarella, M, Mandic, V, Mangiagli, A, Matarrese, S, Mazumdar, A, Mukherjee, S, Musco, I, Nardini, G, No, J, Papanikolaou, T, Peloso, M, Pieroni, M, Pilo, L, Raccanelli, A, Renaux-Petel, S, Renzini, A, Ricciardone, A, Riotto, A, Romano, J, Rollo, R, Pol, A, Morales, E, Sakellariadou, M, Saltas, I, Scalisi, M, Schmitz, K, Schwaller, P, Sergijenko, O, Servant, G, Simakachorn, P, Sorbo, L, Sousa, L, Speri, L, Steer, D, Tamanini, N, Tasinato, G, Torrado, J, Unal, C, Vennin, V, Vernieri, D, Vernizzi, F, Volonteri, M, Wachter, J, Wands, D, Witkowski, L, Zumalacarregui, M, Annis, J, Ares, F, Avelino, P, Avgoustidis, A, Barausse, E, Bonilla, A, Bonvin, C, Bosso, P, Calabrese, M, Caliskan, M, Cembranos, J, Chala, M, Chernoff, D, Clough, K, Criswell, A, Das, S, Silva, A, Dayal, P, Domcke, V, Durrer, R, Easther, R, Escoffier, S, Ferrans, S, Fryer, C, Gair, J, Gordon, C, Hendry, M, Hindmarsh, M, Hooper, D, Kajfasz, E, Kopp, J, Koushiappas, S, Kumar, U, Kunz, M, Lagos, M, Lilley, M, Lizarraga, J, Lobo, F, Maleknejad, A, Martins, C, Meerburg, P, Meyer, R, Mimoso, J, Nesseris, S, Nunes, N, Oikonomou, V, Orlando, G, Ozsoy, O, Pacucci, F, Palmese, A, Petiteau, A, Pinol, L, Zwart, S, Pratten, G, Prokopec, T, Quenby, J, Rastgoo, S, Roest, D, Rummukainen, K, Schimd, C, Secroun, A, Sesana, A, Sopuerta, C, Tereno, I, Tolley, A, Urrestilla, J, Vagenas, E, van de Vis, J, van de Weygaert, R, Wardell, B, Weir, D, White, G, Swiezewska, B, Zhdanov, V, Auclair P., Bacon D., Baker T., Barreiro T., Bartolo N., Belgacem E., Bellomo N., Ben-Dayan I., Bertacca D., Besancon M., Blanco-Pillado J. J., Blas D., Boileau G., Calcagni G., Caldwell R., Caprini C., Carbone C., Chang C. -F., Chen H. -Y., Christensen N., Clesse S., Comelli D., Congedo G., Contaldi C., Crisostomi M., Croon D., Cui Y., Cusin G., Cutting D., Dalang C., De Luca V., Pozzo W. D., Desjacques V., Dimastrogiovanni E., Dorsch G. C., Ezquiaga J. M., Fasiello M., Figueroa D. G., Flauger R., Franciolini G., Frusciante N., Fumagalli J., Garcia-Bellido J., Gould O., Holz D., Iacconi L., Jain R. K., Jenkins A. C., Jinno R., Joana C., Karnesis N., Konstandin T., Koyama K., Kozaczuk J., Kuroyanagi S., Laghi D., Lewicki M., Lombriser L., Madge E., Maggiore M., Malhotra A., Mancarella M., Mandic V., Mangiagli A., Matarrese S., Mazumdar A., Mukherjee S., Musco I., Nardini G., No J. M., Papanikolaou T., Peloso M., Pieroni M., Pilo L., Raccanelli A., Renaux-Petel S., Renzini A. I., Ricciardone A., Riotto A., Romano J. D., Rollo R., Pol A. R., Morales E. R., Sakellariadou M., Saltas I. D., Scalisi M., Schmitz K., Schwaller P., Sergijenko O., Servant G., Simakachorn P., Sorbo L., Sousa L., Speri L., Steer D. A., Tamanini N., Tasinato G., Torrado J., Unal C., Vennin V., Vernieri D., Vernizzi F., Volonteri M., Wachter J. M., Wands D., Witkowski L. T., Zumalacarregui M., Annis J., Ares F. R., Avelino P. P., Avgoustidis A., Barausse E., Bonilla A., Bonvin C., Bosso P., Calabrese M., Caliskan M., Cembranos J. A. R., Chala M., Chernoff D., Clough K., Criswell A., Das S., Silva A., Dayal P., Domcke V., Durrer R., Easther R., Escoffier S., Ferrans S., Fryer C., Gair J., Gordon C., Hendry M., Hindmarsh M., Hooper D. C., Kajfasz E., Kopp J., Koushiappas S. M., Kumar U., Kunz M., Lagos M., Lilley M., Lizarraga J., Lobo F. S. N., Maleknejad A., Martins C. J. A. P., Meerburg P. D., Meyer R., Mimoso J. P., Nesseris S., Nunes N., Oikonomou V., Orlando G., Ozsoy O., Pacucci F., Palmese A., Petiteau A., Pinol L., Zwart S. P., Pratten G., Prokopec T., Quenby J., Rastgoo S., Roest D., Rummukainen K., Schimd C., Secroun A., Sesana A., Sopuerta C. F., Tereno I., Tolley A., Urrestilla J., Vagenas E. C., van de Vis J., van de Weygaert R., Wardell B., Weir D. J., White G., Swiezewska B., and Zhdanov V. I.

Abstract

The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and particle physics, from the MeV to the Planck scale. However, the range of potential cosmological applications of gravitational-wave observations extends well beyond these two objectives. This publication presents a summary of the state of the art in LISA cosmology, theory and methods, and identifies new opportunities to use gravitational-wave observations by LISA to probe the universe.

Published
2023

10. EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

Author

Alves Batista, R., Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž., Bringmann, T., Burrage, C., Bustamante, M., Calderón Bustillo, J., Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., Rham, C. de, Matteo, A. di, Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, D., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Levi Said, J., Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J., Martinelli, M., Martinsolami, C. J. A. P., Millington, P., Moesta, P., Nippel, K., Niro, V., O'Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., P. Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Rida Khalifeh, A., Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., Vliet, A. van, Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., and Zeng, M.

Subjects
Physics, ddc:530
Published
2021
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11. EuCAPT White Paper : Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

Author

Alves-Batista, R., Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž, Bringmann, T., Burrage, C., Bustamante, M., Calderón Bustillo, J., Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Levi Said, J., Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Miller Bertolami, M. M., Millington, P., Moesta, P., Nippel, K., Niro, V., O’Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Rida Khalifeh, A., Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., van Vliet, A., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., Zeng, M., Alves-Batista, R., Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, G., Blasi, P., Böhmer, C. G., Bošnjak, Ž, Bringmann, T., Burrage, C., Bustamante, M., Calderón Bustillo, J., Byrnes, C. T., Calore, F., Catena, R., Cerdeño, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Domènech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Guépin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Levi Said, J., Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Miller Bertolami, M. M., Millington, P., Moesta, P., Nippel, K., Niro, V., O’Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Rida Khalifeh, A., Riotto, A., Roiban, R., Rubio, J., Sahlén, M., Sabti, N., Sagunski, L., Šarčević, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., van Vliet, A., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., and Zeng, M.

Published
2021
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14. EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

Author

Alves Batista, R., Amin, M. A., Barenboim, G., Bartolo, N., Baumann, D., Bauswein, A., Bellini, E., Benisty, D., Bertone, Giantranco, Blasi, P., B��hmer, C. G., Bo��njak, ��., Bringmann, T., Burrage, C., Bustamante, M., Bustillo, J. Calder��n, Byrnes, C. T., Calore, F., Catena, R., Cerde��o, D. G., Cerri, S. S., Chianese, M., Clough, K., Cole, A., Coloma, P., Coogan, A., Covi, L., Cutting, D., Davis, A. C., de Rham, C., di Matteo, A., Dom��nech, G., Drewes, M., Dietrich, T., Edwards, T. D. P., Esteban, I., Erdem, R., Evoli, C., Fasiello, M., Feeney, S. M., Ferreira, R. Z., Fialkov, A., Fornengo, N., Gabici, S., Galatyuk, T., Gaggero, D., Grasso, D., Gu��pin, C., Harz, J., Herrero-Valea, M., Hinderer, T., Hogg, N. B., Hooper, D. C., Iocco, F., Isern, J., Karchev, K., Kavanagh, B. J., Korsmeier, M., Kotera, K., Koyama, K., Krishnan, B., Lesgourgues, J., Said, J. Levi, Lombriser, L., Lorenz, C. S., Manconi, S., Mapelli, M., Marcowith, A., Markoff, S. B., Marsh, D. J. E., Martinelli, M., Martins, C. J. A. P., Matthews, J. H., Meli, A., Mena, O., Mifsud, J., Bertolami, M. M. Miller, Millington, P., Moesta, P., Nippel, K., Niro, V., O'Connor, E., Oikonomou, F., Paganini, C. F., Pagliaroli, G., Pani, P., Pfrommer, C., Pascoli, S., Pinol, L., Pizzuti, L., Porto, R. A., Pound, A., Quevedo, F., Raffelt, G. G., Raccanelli, A., Ramirez-Ruiz, E., Raveri, M., Renaux-Petel, S., Ricciardone, A., Khalifeh, A. Rida, Riotto, A., Roiban, R., Rubio, J., Sahl��n, M., Sabti, N., Sagunski, L., ��ar��evi��, N., Schmitz, K., Schwaller, P., Schwetz, T., Sedrakian, A., Sellentin, E., Serenelli, A., Serpico, P. D., Sfakianakis, E. I., Shalgar, S., Silvestri, A., Tamborra, I., Tanidis, K., Teresi, D., Tokareva, A. A., Tolos, L., Trojanowski, S., Trotta, R., Uhlemann, C., Urban, F. R., Vernizzi, F., van Vliet, A., Villante, F. L., Vincent, A., Vink, J., Vitagliano, E., Weniger, C., Wickenbrock, A., Winter, W., Zell, S., Zeng, M., HEP, INSPIRE, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), 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 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 Univers et Particules de Montpellier (LUPM), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
Astrophysics and Astronomy, Cosmology and Nongalactic Astrophysics (astro-ph.CO), accelerator, WIMP, FOS: Physical sciences, cosmic background radiation, gravitational radiation: direct detection, dark matter, IceCube, X-ray, statistical analysis, ultraviolet, supernova, black hole, LIGO, dark energy, neutron star, white dwarf, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, LISA, electroweak interaction, oscillation [neutrino], flavor [neutrino], solar, messenger, VIRGO, CERN LHC Coll, gamma ray, cosmic radiation, correlation, neutrino: flavor, astro-ph.CO, direct detection [gravitational radiation], neutrino: oscillation, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], Astrophysics - High Energy Astrophysical Phenomena, Lorentz, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the direct detection of gravitational waves with LIGO and Virgo, and many others. This white paper is the result of a collaborative effort that involved hundreds of theoretical astroparticle physicists and cosmologists, under the coordination of the European Consortium for Astroparticle Theory (EuCAPT). Addressed to the whole astroparticle physics community, it explores upcoming theoretical opportunities and challenges for our field of research, with particular emphasis on the possible synergies among different subfields, and the prospects for solving the most fundamental open questions with multi-messenger observations., Comment: White paper of the European Consortium for Astroparticle Theory (EuCAPT). 135 authors, 400 endorsers, 133 pages, 1382 references

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15. Cosmological Flow of Primordial Correlators.

Author

Werth D, Pinol L, and Renaux-Petel S

Abstract

Correlation functions of primordial density fluctuations provide an exciting probe of the physics governing the earliest moments of our Universe. However, the standard approach to compute them is technically challenging. Theoretical predictions are therefore available only in restricted classes of theories. In this Letter, we present a complete method to systematically compute tree-level inflationary correlators. This method is based on following the time evolution of equal-time correlators and it accurately captures all physical effects in any theory. These theories are conveniently formulated at the level of inflationary fluctuations, and can feature any number of degrees of freedom with arbitrary dispersion relations and masses, coupled through any type of time-dependent interactions. We demonstrate the power of this approach by exploring the properties of the cosmological collider signal, a discovery channel for new high-energy physics, in theories with strong mixing and in the presence of features. This work lays the foundation for a universal program to assist our theoretical understanding of inflationary physics and generate theoretical data for an unbiased interpretation of upcoming cosmological observations.

Published
2024
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16. Hyper-Non-Gaussianities in Inflation with Strongly Nongeodesic Motion.

Author

Fumagalli J, Garcia-Saenz S, Pinol L, Renaux-Petel S, and Ronayne J

Abstract

Several recent proposals to embed inflation into high-energy physics rely on inflationary dynamics characterized by a strongly nongeodesic motion in negatively curved field space. This naturally leads to a transient instability of perturbations on sub-Hubble scales, and to their exponential amplification. Supported by first-principles numerical computations, and by the analytical insight provided by the effective field theory of inflation, we show that the bispectrum is enhanced in flattened configurations, and we argue that an analogous result holds for all higher-order correlation functions. These "hyper-non-Gaussianities" thus provide powerful model-independent constraints on nonstandard inflationary attractors motivated by the search for ultraviolet completions of inflation.

Published
2019
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