Zobrazeno 1 - 10
of 642
pro vyhledávání: '"Pellicer C"'
Autor:
Filho, A. A. Araújo, Jusufi, Kimet, Cuadros-Melgar, B., Leon, Genly, Jawad, Abdul, Pellicer, C. E.
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 potential modification and a nonsingular electric potential incorporation. Th
Externí odkaz:
http://arxiv.org/abs/2401.15211
Autor:
Werneck, Leonardo R., Etienne, Zachariah B., Abdalla, Elcio, Cuadros-Melgar, Bertha, Pellicer, C. E.
Publikováno v:
Class. Quantum Grav. 38 (2021) 245005 (20pp)
We present a new open-source, user-friendly toolkit of two codes$-$SFcollapse1D and NRPyCritCol$-$to study critical phenomena in the context of gravitational collapse. SFcollapse1D is a C/C++ tool designed to solve the problem of gravitational collap
Externí odkaz:
http://arxiv.org/abs/2106.06553
Publikováno v:
Phys. Rev. D 99, 044023 (2019)
In this work we have considered a model that includes the interaction of gravity and matter fields with Galilean invariance (the so-called derivative coupling) as well as some corresponding black hole type solutions. Quasinormal perturbations of two
Externí odkaz:
http://arxiv.org/abs/1810.01198
Publikováno v:
Phys. Rev. D 90, 044042 (2014)
We find a new instability in the four-dimensional Reissner-Nordstrom-de Sitter black holes against charged scalar perturbations with vanishing angular momentum, $l=0$. We show that such an instability is caused by superradiance. The instability does
Externí odkaz:
http://arxiv.org/abs/1405.4931
Publikováno v:
Braz J Phys 54, 50 (2024)
In this work we aim at the question of holographic phase transitions in two dimensional systems with Lifshitz scaling. We consider the gravity side candidate for a dual description as the black hole solution of New Massive Gravity (NMG) with Lifshitz
Externí odkaz:
http://arxiv.org/abs/1307.1460
Publikováno v:
PoS ICMP2012, 001 (2012)
Here we present a fast review of some of developments and new results concerning applications of gravity in the context of the AdS/CFT correspondence, in brane world perturbations as well as in holographic superconductors. We also discuss the structu
Externí odkaz:
http://arxiv.org/abs/1302.6217
Publikováno v:
J. Phys. Conf. Ser. 453: 012025 (2013)
We consider scalar and spinorial perturbations on a background described by a $z=3$ three-dimensional Lifshitz black hole. We obtained the corresponding quasinormal modes which perfectly agree with the analytical result for the quasinormal frequency
Externí odkaz:
http://arxiv.org/abs/1302.6185
Publikováno v:
Phys. Rev. D 85, 024014 (2012)
In this work, we probe the stability of a $z=3$ three-dimensional Lifshitz black hole by using scalar and spinorial perturbations. We found an analytical expression for the quasinormal frequencies of the scalar probe field, which perfectly agree with
Externí odkaz:
http://arxiv.org/abs/1110.4856
Autor:
Pellicer, C. E., Ferreira, Elisa G. M., Guariento, Daniel C., Costa, André A., Graef, Leila L., Coelho, Andrea, Abdalla, Elcio
Publikováno v:
Mod. Phys. Lett. A, Vol. 27, No. 26 (2012) 1250144
We consider a toy model to analyze the consequences of dark matter interaction with a dark energy background on the overall rotation of galaxy clusters and the misalignment between their dark matter and baryon distributions when compared to {\Lambda}
Externí odkaz:
http://arxiv.org/abs/1102.5113
Publikováno v:
Phys.Rev.D82:124033,2010
The phase transition of Reissner-Nordstrom AdS_4 interacting with a massive charged scalar field has been further revisited. We found exactly one stable and one unstable quasinormal mode regions for the scalar field. The two of them are separated by
Externí odkaz:
http://arxiv.org/abs/1010.2806