Zobrazeno 1 - 10
of 393
pro vyhledávání: '"Rincón, Ángel"'
Publikováno v:
Physics of the Dark Universe Volume 46, December 2024, 101623
In this paper, we thoroughly explore two crucial aspects of a quantum Schwarzschild black solution within four-dimensional space-time: i) the weak deflection angle, ii) the rigorous greybody factor and, iii) the Dirac quasinormal modes}. Our investig
Externí odkaz:
http://arxiv.org/abs/2409.10930
In this study, we examine the role of the repulsive Casimir force in counteracting the gravitational contraction of a thin spherically symmetric shell. Our main focus is to explore the possibility of achieving a stable balanced configuration within t
Externí odkaz:
http://arxiv.org/abs/2407.11547
Gravitational decoupling allows to obtain new solutions of general relativity. In this paper, we obtain new solutions of the Einstein field equations which describe non-singular black holes. We consider Hayward and Bardeen regular black holes as seed
Externí odkaz:
http://arxiv.org/abs/2405.05370
We discuss some thermodynamic properties as well as the stability of a quantum Schwarzschild black hole, comparing the results with those obtained within a bumblebee gravity model. In particular, the Hawking temperature, $T_H$, the entropy, $S$, the
Externí odkaz:
http://arxiv.org/abs/2404.18804
Autor:
Fontana, R. D. B., Rincon, Angel
We investigate the propagation of a scalar field in a $(2+1)$-dimensional accelerated black hole, recently revisited in \cite{Arenas_Henriquez_2022}. We briefly describe the minimally-coupled configuration as rendering a trivial scalar perturbation w
Externí odkaz:
http://arxiv.org/abs/2404.09936
Publikováno v:
Annals of Physics 463 (2024) 169625
In this manuscript, we explore the shadow and the greybody bounding characteristics of a regular black hole within 4-dimensional space-time, employing the context of gravity that is scale-dependent. Our focus lies in determining limitations on the pa
Externí odkaz:
http://arxiv.org/abs/2402.14190
Publikováno v:
Physics of the Dark Universe 46 (2024) 101674
In this paper, we investigate the theoretical possibility that a Lagrangian fixed point, when applied to cosmological models, can drive dynamical evolution towards a bouncing universe. We analyze the physics of a Lagrangian fixed point within the con
Externí odkaz:
http://arxiv.org/abs/2312.14612
In the present work, we perform a comparative study of different interacting dark energy (DE) models using the Statefinder diagnostics. In particular, 17 different forms of the energy transfer rate $Q$ between DE and dark matter (DM) were focused on,
Externí odkaz:
http://arxiv.org/abs/2310.04324
Publikováno v:
Fortschr. Phys. 71 (2023) 12, 2300075
We discuss energy conditions and quasinormal modes for scalar perturbations of regular charged black holes within the framework of General Relativity coupled to non-linear electrodynamics. The frequencies are computed numerically adopting the WKB met
Externí odkaz:
http://arxiv.org/abs/2309.01910
In this article, using gravitational decoupling by means of minimal geometric deformation approach, we obtain a new spherically symmetric and static black hole solution. To progress, we close the system by assuming that the average pressure of the $\
Externí odkaz:
http://arxiv.org/abs/2308.12317