E. R. Bezerra de Mello
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View article: Cylindrical boundary induced current in the cosmic string spacetime
Cylindrical boundary induced current in the cosmic string spacetime Open
In this paper we investigate the vacuum current associated with a charged bosonic field operator, induced by a cylindrical boundary in the idealized cosmic string spacetime. In this setup we assume that the cylindrical boundary is coaxial …
View article: Thermal correction on the Casimir energy in a Horava-Lifshitz Lorentz-violating scenario
Thermal correction on the Casimir energy in a Horava-Lifshitz Lorentz-violating scenario Open
The Casimir effect is considered a great triumph of Quantum Field Theory. Originally the Casimir energy was investigated considering the vacuum fluctuation associated with electromagnetic field; however it has also been analyzed considerin…
View article: Vacuum energy density from a self-interacting scalar field in a Lorentz-violation Hořava-Lifshitz model
Vacuum energy density from a self-interacting scalar field in a Lorentz-violation Hořava-Lifshitz model Open
In this paper we consider a massive self-interacting scalar quantum field in a Lorentz-violation scenario based on a Hořava-Lifshitz model. Specifically, we investigate the vacuum energy density and its loop correction, up to first order i…
View article: Cylindrical boundary induced current in the cosmic string spacetime
Cylindrical boundary induced current in the cosmic string spacetime Open
In this paper we investigate the vacuum current associated with a charged bosonic field operator, induced by a cylindrical boundary in the idealized cosmic string spacetime. In this setup we assume that the cylindrical boundary is coaxial …
View article: Current Density Induced by a Cosmic String in de Sitter Spacetime in the Presence of Two Flat Boundaries
Current Density Induced by a Cosmic String in de Sitter Spacetime in the Presence of Two Flat Boundaries Open
In this paper, we investigate the vacuum bosonic current density induced by a carrying-magnetic-flux cosmic string in a (D+1)-de Sitter spacetime considering the presence of two flat boundaries perpendicular to it. In this setup, the Robin…
View article: Current Density Induced by a Cosmic String in de Sitter Spacetime in the Presence of Two Flat Boundaries
Current Density Induced by a Cosmic String in de Sitter Spacetime in the Presence of Two Flat Boundaries Open
In this paper, we investigate the vacuum bosonic current density induced by a carrying-magnetic-flux cosmic string in a (D+1)-de Sitter spacetime considering the presence of two flat boundaries perpendicular to it. In this setup, the Robin…
View article: Induced current in high-dimensional AdS bulk in the presence of a cosmic string and brane
Induced current in high-dimensional AdS bulk in the presence of a cosmic string and brane Open
In this paper we analyze the vacuum bosonic current associated with a massive charged scalar field propagating in a $(D+1)$-dimensional anti-de Sitter (AdS) bulk in the presence of an idealized carrying-magnetic-flux cosmic string and also…
View article: Fermionic Casimir energy in Horava–Lifshitz scenario
Fermionic Casimir energy in Horava–Lifshitz scenario Open
In this work, we investigate the violation of Lorentz symmetry through the Casimir effect, one of the most intriguing phenomena in modern physics. The Casimir effect, which represents a macroscopic quantum force between two neutral conduct…
View article: Vacuum energy density from a self-interacting scalar field in a Lorentz-violating Horava-Lifshitz model
Vacuum energy density from a self-interacting scalar field in a Lorentz-violating Horava-Lifshitz model Open
In this paper we consider a massive self-interacting scalar quantum field in a Lorentz-violation scenario based on a Horava-Lifshitz model. Specifically, we investigate the vacuum energy density and its loop correction, up to first order i…
View article: Finite temperature fermionic condensate and energy–momentum tensor in cosmic string spacetime
Finite temperature fermionic condensate and energy–momentum tensor in cosmic string spacetime Open
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 potential propagating in a magnetic-flux-carrying cosmic str…
View article: Fermionic Casimir Energy in Horava-Lifshitz Scenario
Fermionic Casimir Energy in Horava-Lifshitz Scenario Open
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 a macroscopic quantum-origin force between two neutral cond…
View article: Vacuum energy density for interacting real and complex scalar fields in a Lorentz symmetry violation scenario
Vacuum energy density for interacting real and complex scalar fields in a Lorentz symmetry violation scenario Open
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 addition to that, it is also included the quartic self-interaction…
View article: Induced current by a cosmic string and a brane in high-dimensional AdS spacetime
Induced current by a cosmic string and a brane in high-dimensional AdS spacetime Open
In this paper we investigate the bosonic current induced by a brane and a magnetic flux running along the idealized cosmic string in a $$(D+1)$$ -dimensional anti-de Sitter (AdS) background. We consider the brane is parallel to the …
View article: Finite temperature fermionic condensate and energy-momentum tensor in cosmic string spacetime
Finite temperature fermionic condensate and energy-momentum tensor in cosmic string spacetime Open
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 potential propagating in a magnetic-flux-carrying cosmic str…
View article: Vacuum Effects Induced by a Plate in de Sitter Spacetime in the Presence of a Cosmic String
Vacuum Effects Induced by a Plate in de Sitter Spacetime in the Presence of a Cosmic String Open
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 (1+D)-dimensional de Sitter spacetime induced by a plate (flat bounda…
View article: Induced current by a cosmic string and a brane in high-dimensional AdS spacetime
Induced current by a cosmic string and a brane in high-dimensional AdS spacetime Open
In this paper we investigate the bosonic current induced by a brane and a magnetic flux running along the idealized cosmic string in a $(D+1)$-dimensional anti-de Sitter (AdS) background. We consider the brane is parallel to the AdS bounda…
View article: Vacuum effects induced by a plate in de Sitter spacetime in the presence of a cosmic string
Vacuum effects induced by a plate in de Sitter spacetime in the presence of a cosmic string Open
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 $(1+D)$-dimensional de Sitter spacetime induced by a plate (flat bound…
View article: Vacuum polarization induced by a cosmic string and a brane in AdS spacetime
Vacuum polarization induced by a cosmic string and a brane in AdS spacetime Open
In this paper we investigate the vacuum polarization effects associated to a charged quantum massive scalar field on a $$(D+1)$$ -dimensional anti-de Sitter background induced by a magnetic-flux-carrying cosmic string in the branewo…
View article: Vacuum polarization induced by a cosmic string and a brane in AdS spacetime
Vacuum polarization induced by a cosmic string and a brane in AdS spacetime Open
In this paper we investigate the vacuum polarization effects associated to a charged quantum massive scalar field on a $(D+1)$-dimensional anti-de Sitter background induced by a magnetic-flux-carrying cosmic string in the braneworld model …
View article: Bosonic Casimir Effect in an Aether-like Lorentz-Violating Scenario with Higher Order Derivatives
Bosonic Casimir Effect in an Aether-like Lorentz-Violating Scenario with Higher Order Derivatives Open
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 confined in a region between two large parallel plates, having…
View article: Bosonic Casimir effect in an aether-like Lorentz-violating scenario with higher order derivatives
Bosonic Casimir effect in an aether-like Lorentz-violating scenario with higher order derivatives Open
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 confined in a region between two large parallel plates, having …
View article: Finite temperature energy–momentum tensor in compactified cosmic string spacetime
Finite temperature energy–momentum tensor in compactified cosmic string spacetime Open
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 potential propagating in a high-dimensional compactified cosm…
View article: Finite temperature energy-momentum tensor in compactified cosmic string spacetime
Finite temperature energy-momentum tensor in compactified cosmic string spacetime Open
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 potential propagating in a high-dimensional compactified cosm…
View article: Finite temperature charge and current densities around a cosmic string in AdS spacetime with compact dimension
Finite temperature charge and current densities around a cosmic string in AdS spacetime with compact dimension Open
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 densities in the geometry of a magnetic flux carrying genera…
View article: Scalar Casimir effects in a Lorentz violation scenario induced by the presence of constant vectors
Scalar Casimir effects in a Lorentz violation scenario induced by the presence of constant vectors Open
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 real massive scalar quantum field confined in the region bet…
View article: Cosmological Evolution With Negative Energy Densities
Cosmological Evolution With Negative Energy Densities Open
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 that for both those sources the energy density can be eith…
View article: Finite temperature charge and current densities around a cosmic string in AdS spacetime with compact dimension
Finite temperature charge and current densities around a cosmic string in AdS spacetime with compact dimension Open
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 densities in the geometry of a magnetic flux carrying genera…
View article: Quantum Brownian motion for a particle in analog expanding cosmologies in the presence of disclination
Quantum Brownian motion for a particle in analog expanding cosmologies in the presence of disclination Open
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 matter system. The analog spacetime is obtained as an effecti…