Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Delhom, Adria"'
Autor:
Falque, Kévin, Delhom, Adrià, Glorieux, Quentin, Giacobino, Elisabeth, Bramati, Alberto, Jacquet, Maxime J
Quantum fields in curved spacetime exhibit a wealth of effects like Hawking radiation from black holes. While quantum field theory in black holes can only be studied theoretically, it can be tested in controlled laboratory experiments. In experiments
Externí odkaz:
http://arxiv.org/abs/2311.01392
Autor:
Delhom, Adrià, Guerrero, Killian, Calizaya, Paula, Falque, Kévin, Bramati, Alberto, Brady, Anthony J., Jacquet, Maxime J., Agullo, Ivan
The amplification of radiation by superradiance is a universal phenomenon observed in numerous physical systems. We demonstrate that superradiant scattering generates entanglement for different input states, including coherent states, thereby establi
Externí odkaz:
http://arxiv.org/abs/2310.16031
We extend previous efforts to quantify the entanglement generated in Hawking's evaporation process by including rotation and thermal environments (e.g. the cosmic microwave background). Both extensions are needed to describe real black holes in our u
Externí odkaz:
http://arxiv.org/abs/2307.06215
Publikováno v:
JCAP06(2023)059
In loop quantum cosmology (LQC) the big bang singularity is generically resolved by a big bounce. This feature holds even when modified quantization prescriptions of the Hamiltonian constraint are used such as in mLQC-I and mLQC-II. While the later d
Externí odkaz:
http://arxiv.org/abs/2302.04285
Autor:
Delhom, Adrià, García-Moreno, Gerardo, Hohmann, Manuel, Jiménez-Cano, Alejandro, Koivisto, Tomi S.
Publikováno v:
JCAP 12 (2023) 006
In this work we study diffeomorphism-invariant metric-affine theories of gravity from the point of view of self-interacting field theories on top of Minkowski spacetime (or other background). We revise how standard metric theories couple to their own
Externí odkaz:
http://arxiv.org/abs/2211.13056
Modified theories of gravity usually present new degrees of freedom, as well as higher order derivatives, wrong signs in certain terms and complicated couplings already present in the Lagrangian from the beginning or originated by the field redefinit
Externí odkaz:
http://arxiv.org/abs/2207.13431
Autor:
Delhom, Adrià, Mariz, T., Nascimento, J. R., Olmo, Gonzalo J., Petrov, A. Yu., Porfirio, P. J.
Publikováno v:
JCAP07 (2022) 018
The metric-affine bumblebee model in the presence of fermionic matter minimally coupled to the connection is studied. We show that the model admits an Einstein frame representation in which the matter sector is described by a non-minimal Dirac action
Externí odkaz:
http://arxiv.org/abs/2202.11613
Autor:
Delhom, Adrià
In this PhD thesis we deal with several theoretical and phenomenological apsects of metric-affine theories of gravity. Concretely, we first give a broad introduction to the necessary tools to understand the framework and elaborate on some subtleties
Externí odkaz:
http://arxiv.org/abs/2201.09789
Autor:
Saridakis, Emmanuel N., Lazkoz, Ruth, Salzano, Vincenzo, Moniz, Paulo Vargas, Capozziello, Salvatore, Jiménez, Jose Beltrán, De Laurentis, Mariafelicia, Olmo, Gonzalo J., Akrami, Yashar, Bahamonde, Sebastian, Blázquez-Salcedo, Jose Luis, Böhmer, Christian G., Bonvin, Camille, Bouhmadi-López, Mariam, Brax, Philippe, Calcagni, Gianluca, Casadio, Roberto, Cembranos, Jose A. R., de la Cruz-Dombriz, Álvaro, Davis, Anne-Christine, Delhom, Adrià, Di Valentino, Eleonora, Dialektopoulos, Konstantinos F., Elder, Benjamin, Ezquiaga, Jose María, Frusciante, Noemi, Garattini, Remo, Gergely, László Á., Giusti, Andrea, Heisenberg, Lavinia, Hohmann, Manuel, Iosifidis, Damianos, Kazantzidis, Lavrentios, Kleihaus, Burkhard, Koivisto, Tomi S., Kunz, Jutta, Lobo, Francisco S. N., Martinelli, Matteo, Martín-Moruno, Prado, Mimoso, José Pedro, Mota, David F., Peirone, Simone, Perivolaropoulos, Leandros, Pettorino, Valeria, Pfeifer, Christian, Pizzuti, Lorenzo, Rubiera-Garcia, Diego, Said, Jackson Levi, Sakellariadou, Mairi, Saltas, Ippocratis D., Mancini, Alessio Spurio, Voicu, Nicoleta, Wojnar, Aneta
General Relativity and the $\Lambda$CDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as possible new observational ones arising from the explosive deve
Externí odkaz:
http://arxiv.org/abs/2105.12582
By using a novel technique that establishes a correspondence between general relativity and metric-affine theories based on the Ricci tensor, we are able to set stringent constraints on the free parameter of Born-Infeld gravity from the ones recently
Externí odkaz:
http://arxiv.org/abs/2104.01647