Vacuum currents induced by a magnetic flux around a cosmic string with finite core

ER Bezerra de Mello, VB Bezerra, AA Saharian… - Physical Review D, 2015 - APS
We evaluate the Hadamard function and the vacuum expectation value of the current density
for a massive complex scalar field in the generalized geometry of a straight cosmic string …

Vacuum polarization in high-dimensional AdS space-time in the presence of a cosmic string and a compactified extra dimension

WO Dos Santos, ER Bezerra de Mello… - The European Physical …, 2020 - Springer
In this paper, we analyze the vacuum expectation values (VEVs) of the field squared and the
energy–momentum tensor associated with a charged and massive scalar quantum field in a …

Fermionic vacuum polarization around a cosmic string in compactified AdS spacetime

S Bellucci, WO dos Santos, ERB de Mello… - … of Cosmology and …, 2022 - iopscience.iop.org
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 …

Induced current in high-dimensional AdS spacetime in the presence of a cosmic string and a compactified extra dimension

W Oliveira dos Santos, HF Mota, ER Bezerra de Mello - Physical Review D, 2019 - APS
In this paper, we analyze the bosonic current densities induced by a magnetic flux running
along the core of an idealized cosmic string in a high-dimensional anti-de Sitter spacetime …

Fermionic vacuum polarization by a flat boundary in cosmic string spacetime

ERB de Mello, AA Saharian… - Classical and Quantum …, 2012 - iopscience.iop.org
In this paper, we investigate the fermionic condensate and the renormalized vacuum
expectation value (VEV) of the energy–momentum tensor for a massive fermionic field …

Casimir effect for parallel metallic plates in cosmic string spacetime

ERB de Mello, AA Saharian… - Journal of Physics A …, 2012 - iopscience.iop.org
We evaluate the renormalized vacuum expectation values (VEVs) of electric and magnetic
field squared and the energy–momentum tensor for the electromagnetic field in the …

Induced fermionic currents in de Sitter spacetime in the presence of a compactified cosmic string

A Mohammadi, ERB de Mello… - Classical and Quantum …, 2015 - iopscience.iop.org
We investigate the vacuum fermionic currents in the geometry of a compactified cosmic
string on the background of de Sitter (dS) spacetime. The currents are induced by magnetic …

Finite temperature fermionic condensate and energy–momentum tensor in cosmic string spacetime

WO Santos, ERB de Mello - The European Physical Journal C, 2024 - Springer
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 …

Induced fermionic current by a magnetic tube in the cosmic string spacetime

MS Maior de Sousa, RF Ribeiro, ER Bezerra de Mello - Physical Review D, 2016 - APS
In this paper, we consider a charged massive fermionic quantum field in the spacetime of an
idealized cosmic string, in the presence of a magnetic field confined in a cylindrical tube of …

Finite temperature fermionic charge and current densities induced by a cosmic string with magnetic flux

A Mohammadi, ERB de Mello… - Journal of Physics A …, 2015 - iopscience.iop.org
We investigate the finite temperature expectation values of the charge and current densities
for a massive fermionic field with nonzero chemical potential, μ, in the geometry of a straight …