Zobrazeno 1 - 10
of 163
pro vyhledávání: '"V. B. Bezerra"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 10, Pp 1-20 (2022)
Abstract We investigate the quasibound states of charged massive scalar fields in the Kerr–Newman black hole spacetime by using a new approach recently developed, which uses the polynomial conditions of the Heun functions. We calculate the resonant
Externí odkaz:
https://doaj.org/article/8cdb5ece69374a93bf28ea96b696f710
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 8, Pp 1-22 (2022)
Abstract We examine the interaction between massless scalar fields and the gravitational field generated by a black hole solution that was recently obtained in the consistent well-defined 4-dimensional Einstein–Gauss–Bonnet gravity with a cosmolo
Externí odkaz:
https://doaj.org/article/8df81aafe667491fb8d0948186eeff8c
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 10, Pp 1-8 (2021)
Abstract In this paper we show that wormholes in (2+1) dimensions (3-D) cannot be sourced solely by both Casimir energy density and tension, differently from what happens in a 4-D scenario, in which case it has been shown recently, by the direct comp
Externí odkaz:
https://doaj.org/article/d0fa992a4e6a45a48f31d88d2d73c838
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 3, Pp 1-9 (2021)
Abstract We investigate the Casimir effect between parallel plates placed along a circular trajectory around the rotating Damour–Solodkhin (D–S) and Teo wormholes. This is made through the calculation of the renormalized quantum vacuum energy den
Externí odkaz:
https://doaj.org/article/13165452244b482f9dd1c528d1aeace3
Publikováno v:
Universe, Vol 8, Iss 12, p 616 (2022)
In this paper, we study quantum relativistic features of a scalar field around the Rindler–Schwarzschild wormhole. First, we introduce this new class of spacetime, investigating some energy conditions and verifying their violation in a region nearb
Externí odkaz:
https://doaj.org/article/0ebada86a61f4869b4fd3ca9616e377e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 11, Pp 1-10 (2019)
Abstract We study some properties of the extended phase space of a quantum-corrected Schwarzschild black hole surrounded by a perfect fluid. In particular we demonstrate that, due to the quantum correction, there exist first and second order phase tr
Externí odkaz:
https://doaj.org/article/f8e5e400e0db41f1b19229c34a29ef48
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 10, Pp 1-7 (2019)
Abstract We investigate the Casimir effect of the massless scalar field in a cavity formed by ideal parallel plates in the spacetime generated by a rotating axially symmetric distribution of vector or scalar (tensor) unparticles, around which the pla
Externí odkaz:
https://doaj.org/article/9e7f5eb852b041189ec811d9c705e1a2
Some remarks on the thermodynamics of charged AdS black holes with cloud of strings and quintessence
Autor:
J. M. Toledo, V. B. Bezerra
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 2, Pp 1-11 (2019)
Abstract In this paper we investigate the combined effects of the cloud of strings and quintessence which surround a Reissner–Nordstrom AdS black hole on its thermodynamics. We treat the cosmological constant as a thermodynamic pressure whose conju
Externí odkaz:
https://doaj.org/article/de72590a2bdd437090443a15bc74e889
Autor:
J. M. Toledo, V. B. Bezerra
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 2, Pp 1-9 (2019)
Abstract In this paper, we will obtain the solution corresponding to a static spherically symmetric black hole with a cloud of strings in a special class of higher curvature gravity, namely, pure Lovelock gravity. Some aspects of the thermodynamics o
Externí odkaz:
https://doaj.org/article/e4390a250f634d4ba5f0ea250934a8a9
Autor:
Jefferson de M. Toledo, V. B. Bezerra
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 7, Pp 1-12 (2018)
Abstract The Lovelock gravity is a natural extension of the Theory of General Relativity (TGR) to higher dimensions, which presents the criteria of general covariance and whose field equations are of second order. Its action contains higher order cur
Externí odkaz:
https://doaj.org/article/2bcd3a649802495891debd64dbfb642a