Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Luna, Raimon"'
Autor:
Fontbuté, Joan, Andrade, Tomas, Luna, Raimon, Bustillo, Juan Calderón, Morrás, Gonzalo, Jaraba, Santiago, García-Bellido, Juan, Izquierdo, Germán López
We present a surrogate numerical-relativity model for close hyperbolic black-hole encounters with equal masses and spins aligned with the orbital momentum. Our model, generated in terms of the Newman-Penrose scalar $\psi_4$, spans impact parameters $
Externí odkaz:
http://arxiv.org/abs/2409.16742
Publikováno v:
Phys.Rev.D 109 (2024) 12, 124064
In this paper, we apply a novel approach based on physics-informed neural networks to the computation of quasinormal modes of black hole solutions in modified gravity. In particular, we focus on the case of Einstein-scalar-Gauss-Bonnet theory, with s
Externí odkaz:
http://arxiv.org/abs/2404.11583
Autor:
Luna, Raimon, Llorens-Monteagudo, Miquel, Lorenzo-Medina, Ana, Bustillo, Juan Calderón, Sanchis-Gual, Nicolas, Torres-Forné, Alejandro, Font, José A., Herdeiro, Carlos A. R., Radu, Eugen
Publikováno v:
Phys.Rev.D 110 (2024) 2, 024004
We present several high-accuracy surrogate models for gravitational-wave signals from equal-mass head-on mergers of Proca stars, computed through the Newman-Penrose scalar $\psi_4$. We also discuss the current state of the model extensions to mergers
Externí odkaz:
http://arxiv.org/abs/2404.01395
Publikováno v:
JHEP05(2023)182
We describe the dynamical evaporation of a black hole as the classical evolution in time of a black hole in an Anti-de Sitter braneworld. A bulk black hole whose horizon intersects the brane yields the classical bulk dual of a black hole coupled to q
Externí odkaz:
http://arxiv.org/abs/2301.02587
Publikováno v:
JHEP 02 (2023) 147
We study collisions of Gaussian mass-density blobs in a holographic plasma, using a large $D$ effective theory, as a model for holographic shockwave collisions. The simplicity of the effective theory allows us to perform the first 4+1 collisions in E
Externí odkaz:
http://arxiv.org/abs/2212.14440
Autor:
Luna, Raimon, Bustillo, Juan Calderón, Martínez, Juan José Seoane, Torres-Forné, Alejandro, Font, José A.
Publikováno v:
Phys.Rev.D 107 (2023) 6, 064025
We use physics-informed neural networks (PINNs) to compute the first quasi-normal modes of the Kerr geometry via the Teukolsky equation. This technique allows us to extract the complex frequencies and separation constants of the equation without the
Externí odkaz:
http://arxiv.org/abs/2212.06103
Publikováno v:
Phys.Rev.D 106 (2022) 8, 084017
We compute the emission of linear momentum (kicks) by both gravitational and electromagnetic radiation in fully general-relativistic numerical evolutions of quasi-circular charged black hole binaries. We derive analytical expressions for slowly movin
Externí odkaz:
http://arxiv.org/abs/2207.06429
Publikováno v:
JHEP 04 (2022) 063
We explore the phase space of non-uniform black branes compactified on oblique lattices with a large number of dimensions. We find the phase diagrams for different periodicities and angles, and determine the thermodynamically preferred phases for eac
Externí odkaz:
http://arxiv.org/abs/2201.11687
Publikováno v:
Phys. Rev. D 103, 104043 (2021)
We clarify a number of issues that arise when extending the analysis of Strong Cosmic Censorship (SCC) to perturbations of highly charged Reissner-Nordstr\"{o}m de Sitter (RNdS) spacetimes. The linear stability of the Cauchy horizon can be determined
Externí odkaz:
http://arxiv.org/abs/2012.08413
Publikováno v:
J. High Energ. Phys. (2020) 2020: 98
We study how black hole entropy is generated and the role it plays in several highly dynamical processes: the decay of unstable black strings and ultraspinning black holes; the fusion of two rotating black holes; and the subsequent fission of the mer
Externí odkaz:
http://arxiv.org/abs/2005.14498