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New horizons for fundamental physics with LISA

K. G. Arun, E. Belgacem, R. Benkel, L. Bernard, E. Berti, G. Bertone, M. Besancon, D. Blas, C. G. Böhmer, R. Brito, G. Calcagni, A. Cardenas-Avendaño, K. Clough, M. Crisostomi, V. De Luca, D. Doneva, S. Escoffier, J. M. Ezquiaga, P. G. Ferreira, P. Fleury, S. Foffa, G. Franciolini, N. Frusciante, J. García-Bellido, C. A. R. Herdeiro, T. Hertog, T. Hinderer, P. Jetzer, L. Lombriser, E. Maggio, M. Maggiore, M. Mancarella, A. Maselli, S. Nampalliwar, D. Nichols, M. Okounkova, P. Pani, V. Paschalidis, A. Raccanelli, L. Randall, S. Renaux-Petel, A. Riotto, M. T. Ruiz, A. Saffer, M. Sakellariadou, I. Saltas, B. Sathyaprakash, L. Shao, C. F. Sopuerta, T. Sotiriou, N. Stergioulas, N. Tamanini, F. Vernizzi, H. Witek, K. Wu, K. Yagi, S. Yazadjiev, N. Yunes, M. Zilhão, N. Afshordi, M. -C. Angonin, V. Baibhav, E. Barausse, T. Barreiro, N. Bartolo, N. Bellomo, I. Ben-Dayan, E. A. Bergshoeff, S. Bernuzzi, D. Bertacca, S. Bhagwat, B. Bonga, L. M. Burko, G. Compére, G. Cusin, A. C. da Silva, S. Das, C. de Rham, K. Destounis, E. Dimastrogiovanni, F. Duque, R. Easther, H. F. Farmer, M. R. Fasiello, S. Fisenko, K. Fransen, J. Frauendiener, J. Gair, L. Á. Gergely, D. Gerosa, L. Gualtieri, W. -B. Han, A. Hees, T. Helfer, J. Hennig, A. C. Jenkins, E. Kajfasz, N. Kaloper, V. Karas, B. J. Kavanagh, S. A. Klioner, S. M. Koushiappas, M. Lagos, C. Le Poncin-Lafitte, F. S. N. Lobo, C. Markakis, P. Martín-Moruno, C. J. A. P. Martins, S. Matarrese, D. R. Mayerson, J. P. Mimoso, J. Noller, N. J. Nunes, R. Oliveri, G. Orlando, G. Pappas, I. Pikovski, L. Pilo, J. Podolský, G. Pratten, T. Prokopec, H. Qi, S. Rastgoo, A. Ricciardone, R. Rollo, D. Rubiera-Garcia, O. Sergijenko, S. L. Shapiro, D. Shoemaker, A. Spallicci, O. Stashko, L. C. Stein, G. Tasinato, A. Tolley, E. C. Vagenas, S. Vandoren, D. Vernieri, R. Vicente, T. Wiseman, V. I. Zhdanov, M. Zumalacárregui

Abstract
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.

Keywords
LISA; Gravitational waves; Fundamental physics; Tests of general relativity; General Relativity and Quantum Cosmology

Living Reviews in Relativity
Volume 25, Number 1
2022 December

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia