256 citations · 1.7k across the 84 of their papers we have counts for
86 papers
Vacuum polarization by charged matter fields in AdS spacetime in the presence of a cosmic string
E. R. Bezerra de Mello
In this paper we revisited the analyse the vacuum polarizations effect associated wit charged matter fields in a higher-dimensional anti de-Sitter (AdS) spacetime in the presence o…
Casimir effect for a massive scalar field confined between parallel plates with a spatially varying effective mass
R. L. Araújo Xavier, M. H. B. Chaves, E. R. Bezerra de Mello +1
We investigate the Casimir effect for a massive real scalar field confined between two perfectly reflecting parallel plates in the presence of a position-dependent effective mass,…
Induced current by a magnetic flux in dimensional conical spacetime in a Ho{ř}ava-Lifshitz Lorentz-violating scenario
E. R. Bezerra de Mello, H. F. Santana Mota
We investigate the vacuum expectation value of bosonic current induced by a magnetic flux in a dimensional conical spacetime in the presence of a circular boundary, in a Ho…
Thermal correction on the Casimir energy in a Horava-Lifshitz Lorentz-violating scenario
E. R. Bezerra de Mello, Herondy F. Mota
The Casimir effect is considered a great triumph of Quantum Field Theory. Originally the Casimir energy was investigated considering the vacuum fluctuation associated with electrom…
Fermionic Casimir Energy in Horava-Lifshitz Scenario
E. R. Bezerra de Mello, M. B. Cruz
In this work, we investigate the violation of Lorentz symmetry through the Casimir effect. The Casimir effect is one of the most intriguing aspects of modern physics, representing…
Vacuum energy density for interacting real and complex scalar fields in a Lorentz symmetry violation scenario
A. J. D. Farias Junior, A. Smirnov, Herondy F. Santana Mota +1
In this paper the vacuum energy density and generation of topological mass are investigated for a system of a real and complex scalar fields interacting with each other. In additio…
Finite temperature fermionic condensate and energy-momentum tensor in cosmic string spacetime
W. Oliveira dos Santos, E. R. Bezerra de Mello
Here we analyze the expectation value of the fermionic condensate and the energy-momentum tensor associated with a massive charged fermionic quantum field with a nonzero chemical p…
Vacuum effects induced by a plate in de Sitter spacetime in the presence of a cosmic string
W. Oliveira dos Santos, E. R. Bezerra de Mello
In this paper we investigate the vacuum expectation values of the field squared and the energy-momentum tensor associated to a charged massive scalar quantum field in a -dim…
Induced current by a cosmic string and a brane in high-dimensional AdS spacetime
W. Oliveira dos Santos, E. R. Bezerra de Mello
In this paper we investigate the bosonic current induced by a brane and a magnetic flux running along the idealized cosmic string in a -dimensional anti-de Sitter (AdS) back…
Bosonic Casimir effect in an aether-like Lorentz-violating scenario with higher order derivatives
R. A. Dantas, H. F. Santana Mota, E. R. Bezerra de Mello
In this paper we investigate the bosonic Casimir effect in a Lorentz-violating symmetry scenario. The theoretical model adopted consists of a real massive scalar quantum field conf…
Vacuum polarization induced by a cosmic string and a brane in AdS spacetime
W. Oliveira dos Santos, E. R. Bezerra de Mello
In this paper we investigate the vacuum polarization effects associated to a charged quantum massive scalar field on a -dimensional anti-de Sitter background induced by a ma…
Finite temperature energy-momentum tensor in compactified cosmic string spacetime
W. Oliveira dos Santos, E. R. Bezerra de Mello
In this paper we analyze the expectation value of the field squared and the energy-momentum tensor associated with a massive charged scalar quantum field with a nonzero chemical po…
Scalar Casimir effects in a Lorentz violation scenario induced by the presence of constant vectors
E. R. Bezerra de Mello, M. B. Cruz
In this work, we consider a theoretical model that presents violation of the Lorentz symmetry in the approach of Quantum Field Theory. The theoretical model adopted consists of a r…
Finite temperature charge and current densities around a cosmic string in AdS spacetime with compact dimension
E. R. Bezerra de Mello, W. Oliveira dos Santos, A. A. Saharian
For a massive scalar field with a general curvature coupling parameter, we investigate the finite temperature contributions to the Hadamard function and to the charge and current d…
Cosmological evolution with negative energy densities
A. A. Saharian, R. M. Avagyan, E. R. Bezerra de Mello +3
For general number of spatial dimensions we investigate the cosmological dynamics driven by a cosmological constant and by a source with barotropic equation of state. It is assumed…
Quantum Brownian motion for a particle in analog expanding cosmologies in the presence of disclination
E. J. B. Ferreira, E. R. Bezerra de Mello, H. F. Santana Mota
In this paper we study the quantum brownian motion of a scalar point particle in the analog Friedman-Robertson-Walker spacetime in the presence of a disclination, in a condensed ma…
Fermionic vacuum polarization induced by a non-Abelian vortex
E. R. Bezerra de Mello, H. F. Santana Mota
In this paper, we analyze the fermionic condensate (FC) and the vacuum expectation value (VEV) of the energy-momentum tensor associated with an isospin- charged massive fermio…
Cosmic string and brane induced effects on the fermionic vacuum in AdS spacetime
S. Bellucci, W. Oliveira dos Santos, E. R. Bezerra de Mello +1
We investigate the combined effects of a magnetic flux-carrying cosmic string and a brane on the fermionic condensate (FC) and on the vacuum expectation value (VEV) of the energy-m…
Fermionic condensate in de Sitter spacetime
A. A. Saharian, E. R. Bezerra de Mello, A. S. Kotanjyan +1
Fermionic condensate is investigated in -dimensional de Sitter spacetime by using the cutoff function regularization. In order to fix the renormalization ambiguity for massi…
Fermionic vacuum polarization around a cosmic string in compactified AdS spacetime
S. Bellucci, W. Oliveira dos Santos, E. R. Bezerra de Mello +1
We investigate topological effects of a cosmic string and compactification of a spatial dimension on the vacuum expectation value (VEV) of the energy-momentum tensor for a fermioni…
Topological effects in fermion condensate induced by cosmic string and compactification on AdS bulk
S. Bellucci, W. Oliveira dos Santos, E. R. Bezerra de Mello +1
We investigate the fermion condensate (FC) for a massive spinor field on background of the 5-dimensional locally anti-de Sitter (AdS) spacetime with a compact dimension and in the…
Vacuum bosonic currents induced by a compactified cosmic string in dS background
E. A. F. Bragança, E. R. Bezerra de Mello, A. Mohammadi
In this paper, we investigate the vacuum bosonic currents in the geometry of a compactified cosmic string in the background of the de Sitter spacetime. The currents are induced by…
Azimuthal fermionic current in the cosmic string spacetime induced by a magnetic tube
M. S. Maior de Sousa, R. F. Ribeiro, E. R. Bezerra de Mello
In this paper, we analyze the vacuum azimuthal fermionic current induced by a magnetic field confined in a cylindrical tube of finite radius , in the cosmic string spacetime. Th…
Non-Abelian cosmic string in the Starobinsky model of gravity
J. P. Morais Graça, A. de Pádua Santos, Eugênio R. Bezerra de Mello +1
In this paper, we analyze numerically the behaviour of the solutions corresponding to a non-Abelian cosmic string in the framework of the Starobinsky model, i.e. where $f(R)=R + ζR…