10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Instituto de Física CorpuscularES3.6k papers
- Centre National de la Recherche ScientifiqueFR2.7k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.4k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT2.2k papers
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- University of LiverpoolGB2.2k papers
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- National Institute for Subatomic PhysicsNL2.2k papers
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- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT2.1k papers
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18 papers · 2 filters
A polynomial affine model of gravity: after ten years
Oscar Castillo-Felisola, Bastian Grez, Manuel Morocho-López +4
The polynomial affine model of gravity was proposed as an alternative to metric and metric-affine gravitational models. What at the beginning was thought as a source of unpredictab…
On the Structure of Black Bounces Sourced by Anisotropic Fluids
L. A. Lessa, G. J. Olmo
The field equations of static, spherically symmetric geometries generated by anisotropic fluids is investigated with the aim of better understanding the relation between the matter…
A Deep Learning Powered Numerical Relativity Surrogate for Binary Black Hole Waveforms
Osvaldo Gramaxo Freitas, Anastasios Theodoropoulos, Nino Villanueva +6
Gravitational-wave approximants are essential for gravitational-wave astronomy, allowing the coverage binary black hole parameter space for inference or match filtering without cos…
Parameter estimation of microlensed gravitational waves with Conditional Variational Autoencoders
Roberto Bada-Nerin, Oleg Bulashenko, Osvaldo Gramaxo Freitas +1
Gravitational lensing of gravitational waves (GWs) provides a unique opportunity to study cosmology and astrophysics at multiple scales. Detecting microlensing signatures, in parti…
Postmerger multimessenger analysis of binary neutron stars: Effect of the magnetic field strength and topology
Jamie Bamber, Antonios Tsokaros, Milton Ruiz +1
The oscillation modes of neutron star (NS) merger remnants, as encoded by the kHz postmerger gravitational wave (GW) signal, hold great potential for constraining the as-yet undete…
Cold Collapse and Bounce of an FLRW Cloud
Swaraj Pradhan, Michael Gabler, Enrique Gaztañaga
We study the collapse of spherical cold clouds beyond black hole formation to investigate the possibility of a bounce in the in-falling matter when a critical density or pressure i…
The fine structure of the peaks of the correlation function in acoustic black holes: a complete analytical model
Paul R. Anderson, Roberto Balbinot, Richard A. Dudley +3
The detailed structure of the peaks appearing in the density-density correlation function for an acoustic black hole formed by a Bose-Einstein condensate is analytically discussed…
Spatially-Homogeneous Cosmologies
Juan Antonio Sáez, Salvador Mengual, Joan Josep Ferrando
The necessary and sufficient conditions for a perfect fluid solution to define a spatially-homogeneous cosmology are achieved. These conditions are Intrinsic, Deductive, Explicit a…
Thermodynamics of the universes admitting isotropic radiation
Salvador Mengual, Joan Josep Ferrando, Juan Antonio Sáez
The thermodynamic interpretation of the Stephani Universes is studied in detail. The general expression of the speed of sound and of the thermodynamic schemes associated with a the…
Analytical solutions for Maxwell-scalar system on radially symmetric spacetimes
I. Andrade, D. Bazeia, M. A. Marques +2
We investigate Maxwell-scalar models on radially symmetric spacetimes in which the gauge and scalar fields are coupled via the electric permittivity. We find the conditions that al…
Gravitational waves from first-order phase transitions: from weak to strong
Chiara Caprini, Ryusuke Jinno, Thomas Konstandin +3
We study the generation of gravitational waves (GWs) during a cosmological first-order phase transition (PT) using the recently introduced Higgsless approach to numerically simulat…
On the asymmetric non-canonical braneworld in five dimensions
F. C. E. Lima, F. M. Belchior, C. A. S. Almeida +1
Revisiting Einstein's gravitational theory, we build a five-dimensional braneworld. Within this framework, one announces the appearance of symmetric and asymmetric domain walls. Fu…
Nonsingular, lump-like, scalar compact objects in -dimensional Einstein gravity
Roberto V. Maluf, Gerardo Mora-Pérez, Gonzalo J. Olmo +1
We study the space-time geometry generated by coupling a free scalar field with a non-canonical kinetic term to General Relativity in dimensions. After identifying a family…
Quasinormal Modes in Modified Gravity using Physics-Informed Neural Networks
Raimon Luna, Daniela D. Doneva, José A. Font +2
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 particula…
Numerical relativity surrogate models for exotic compact objects: the case of head-on mergers of equal-mass Proca stars
Raimon Luna, Miquel Llorens-Monteagudo, Ana Lorenzo-Medina +6
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 . W…
Charged Black Holes with Yukawa Potential
A. A. Araújo Filho, Kimet Jusufi, B. Cuadros-Melgar +3
This study derives a novel family of charged black hole solutions featuring short- and long-range modifications. These ones are achieved through a Yukawa-like gravitational potenti…
Electrically charged black hole solutions in semiclassical gravity and dynamics of linear perturbations
Adrián del Río, Evelyn-Andreea Ester
We explore quantum corrections of electrically charged black holes subject to vacuum polarization effects of fermion fields in QED. Solving this problem exactly is challenging so w…
Identifying thermal effects in neutron star merger remnants with model-agnostic waveform reconstructions and third-generation detectors
Miquel Miravet-Tenés, Davide Guerra, Milton Ruiz +2
We probe the intrinsic differences in simulated gravitational-wave signals from binary neutron star (BNS) mergers, arising from varying approaches to incorporating thermal effects…