Zobrazeno 1 - 10
of 1 466
pro vyhledávání: '"Salas, José A"'
Autor:
del Rio, Adrian, Navarro-Salas, Jose
In this article we briefly review the adiabatic renormalization program for spin 1/2 fields in expanding universes. We introduce the method and provide explicit expressions for the renormalized vacuum expectation value of the stress-energy tensor. Th
Externí odkaz:
http://arxiv.org/abs/2412.06718
The adiabatic regularization method is likely the most direct and intuitive renormalization scheme for FLRW cosmologies. The method requires one to start with a nonvanishing mass, but massless theories can be studied by taking the massless limit at t
Externí odkaz:
http://arxiv.org/abs/2412.01963
We analyze the semiclassical Schwarzschild geometry in the Boulware quantum state in the framework of two-dimensional (2D) dilaton gravity. The classical model is defined by the spherical reduction of Einstein's gravity sourced with conformal scalar
Externí odkaz:
http://arxiv.org/abs/2411.10523
Autor:
Navarro-Salas, José
Cosmic censorship protects the outside world from black hole singularities and paves the way for assigning entropy to gravity at the event horizons. We point out a tension between cosmic censorship and the quantum backreacted geometry of Schwarzschil
Externí odkaz:
http://arxiv.org/abs/2403.13201
We analyze the adiabatic regularization scheme to renormalize Proca fields in a four-dimensional Friedmann-Lema\^{i}tre-Robertson-Walker spacetime. The adiabatic method is well established for scalar and spin-$1/2$ fields, but is not yet fully unders
Externí odkaz:
http://arxiv.org/abs/2310.11860
We scrutinize the recent Letter "Gravitational pair production and black hole evaporation" by M.F. Wondrak, W.D. van Suijlekom and H. Falcke [Phys. Rev. Lett. 130, 221502 (2023); arXiv:2305.18521]. We show that some consequences based on the proposed
Externí odkaz:
http://arxiv.org/abs/2306.07628
Autor:
Salas, José Antonio
Publikováno v:
Lexis. 32(1):147-158
Externí odkaz:
http://revistas.pucp.edu.pe/index.php/lexis/article/view/2208/2138
http://repositorio.pucp.edu.pe/index/handle/123456789/103573
http://repositorio.pucp.edu.pe/index/handle/123456789/103573
Autor:
Salas, José Antonio
Publikováno v:
Lexis. 32(2):321-345
Externí odkaz:
http://revistas.pucp.edu.pe/index.php/lexis/article/view/1538/1483
http://repositorio.pucp.edu.pe/index/handle/123456789/100083
http://repositorio.pucp.edu.pe/index/handle/123456789/100083
In this paper, we analyze the quantum vacuum in a radiation-dominated and CPT-invariant universe by further imposing the quantum states to be ultraviolet regular i.e., satisfying the Hadamard/adiabatic condition. For scalar fields, this is enforced b
Externí odkaz:
http://arxiv.org/abs/2302.08812
Autor:
Flores-Calla, Susan S.1 (AUTHOR), Villanueva-Salas, José A.1 (AUTHOR), Diaz-Rodriguez, Karla1 (AUTHOR), Gonzales-Condori, Elvis G.2 (AUTHOR) elvgonzalesc@gmail.com, Siddique, Mohammad Abdul Momin (AUTHOR)
Publikováno v:
Scientifica. 12/10/2024, Vol. 2024, p1-12. 12p.