Search Results - "de Mello, E.R."
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Induced vacuum currents in anti-de Sitter space with toral dimensions
Published in Physics letters. B (04-02-2015)“…We investigate the Hadamard function and the vacuum expectation value of the current density for a charged massive scalar field on a slice of anti-de Sitter…”
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Relativistic quantum dynamics of a charged particle in cosmic string spacetime in the presence of magnetic field and scalar potential
Published in The European physical journal. C, Particles and fields (01-06-2012)“…In this paper we analyze the relativistic quantum motion of charged spin-0 and spin- particles in the presence of a uniform magnetic field and scalar…”
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Vacuum fermionic currents in braneworld models on AdS bulk with a cosmic string
Published in The journal of high energy physics (22-02-2021)“…A bstract We investigate the effects of a brane and magnetic-flux-carrying cosmic string on the vacuum expectation value (VEV) of the current density for a…”
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Fermionic current induced by magnetic flux in compactified cosmic string spacetime
Published in The European physical journal. C, Particles and fields (01-08-2013)“…In this paper, we investigate the fermionic current densities induced by a magnetic flux running along the idealized cosmic string in a four-dimensional…”
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Fermionic vacuum polarization in compactified cosmic string spacetime
Published in The European physical journal. C, Particles and fields (2014)“…We investigate the fermionic condensate and the vacuum expectation value (VEV) of the energy-momentum tensor for a charged massive fermionic field in the…”
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Cosmological Evolution with Negative Energy Densities
Published in Astrophysics (01-09-2022)“…For general number of spatial dimensions we investigate the cosmological dynamics driven by a cosmological constant and by a source with barotropic equation of…”
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Fermionic Condensate in de Sitter Spacetime
Published in Astrophysics (01-12-2021)“…Fermionic condensate is investigated in (D + 1)-dimensional de Sitter spacetime by using the cutoff function regularization. In order to fix the…”
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Electromagnetic Casimir densities induced by a conducting cylindrical shell in the cosmic string spacetime
Published in Physics letters. B (08-02-2007)“…We investigate the renormalized vacuum expectation values of the field square and the energy–momentum tensor for the electromagnetic field inside and outside…”
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Vacuum polarization effects on flat branes due to a global monopole
Published in Physical review. D, Particles, fields, gravitation, and cosmology (01-05-2006)Get full text
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Exact Casimir–Polder potential between a particle and an ideal metal cylindrical shell and the proximity force approximation
Published in The European physical journal. C, Particles and fields (01-04-2011)“…We derive the exact Casimir–Polder potential for a polarizable microparticle inside an ideal metal cylindrical shell using the Green function method. The exact…”
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Nonrelativistic scattering problem by a global monopole
Published in Physical review. D, Particles and fields (01-07-1997)Get full text
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12
Vacuum polarization by a composite topological defect
Published in Physics letters. B (02-11-2006)“…In this Letter we analyze one-loop quantum effects of a scalar field induced by a composite topological defect consisting a cosmic string on a p-dimensional…”
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Comment to: “Fine structure constant in the spacetime of a cosmic string” [Phys. Lett. B 614 (2005) 140]
Published in Physics letters. B (18-08-2005)“…In the paper [F. Nasseri, Phys. Lett. B 614 (2005) 140–142], F. Nasseri shows that the value of the fine structure constant reduces due to the presence of a…”
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Constraints on the parameters of degree-type hypothetical forces following from the new Casimir force measurement
Published in Physics letters. A (15-12-1997)“…The additional force is calculated which acts due to the hypothetical degree-type interatomic interactions in the configuration of the recent Casimir force…”
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15
Federation Web: a scheme to compound authorization chains on large-scale distributed systems
Published in 22nd International Symposium on Reliable Distributed Systems, 2003. Proceedings (2003)“…Traditional security systems are not easily scalable and can become single points of failure or performance bottlenecks when used on a large-scale distributed…”
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Conference Proceeding -
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Vacuum polarization by a magnetic flux in a cosmic string background
Published in Nuclear physics. Section B, Proceedings supplement (01-02-2004)“…In this paper we analyse the vacuum polarization effects due to a magnetic flux on massless fermionic fields in a cosmic string background. Three distinct…”
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A Model to support SPKI Federations management through XKMS
Published in IEEE International Conference on Web Services (ICWS 2007) (01-07-2007)“…The purpose of the XML Key Management Specification (XKMS) is to facilitate the use of a Public Key Infrastructure (PKI) by transferring the complexity…”
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Conference Proceeding -
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Mediation of trust across Web services
Published in IEEE International Conference on Web Services (ICWS'05) (2005)“…This work presents the use of security proposals in the Web Services architecture aiming to provide an environment that guarantees authentication and…”
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Massive fermions in the non-Abelian vortex field
Published in Physical review. D, Particles and fields (15-10-1988)Get full text
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Wilson loops in the fermion―non-Abelian-vortex system
Published in Physical review. D, Particles and fields (15-12-1988)Get full text
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