1.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- D. Bazeia3 profiles287 · h 40
- A. Petrov4 profiles183 · h 30
- J. Nascimento2 profiles163 · h 29
- V. B. Bezerra2 profiles136 · h 35
- R. Menezes2 profiles112 · h 23
- F. A. Brito2 profiles87 · h 23
- L. Losano82 · h 24
- E. R. B. de Mello76 · h 0
- G. Olmo73 · h 47
- A. Saharian65 · h 34
- M. Marques2 profiles61 · h 54
- I. Lobo58 · h 22
- Universidade Federal de Campina GrandeBR277 papers
- Universidade de São PauloBR121 papers
- Universitat de ValènciaES97 papers
- Universidade Federal de PernambucoBR67 papers
- Universidade Federal do Rio Grande do NorteBR64 papers
- Universidade Federal de AlagoasBR52 papers
- Yerevan State UniversityAM51 papers
- Universidade Federal de LavrasBR46 papers
- Universidade Estadual da ParaíbaBR45 papers
- Universidade Federal do Rio de JaneiroBR43 papers
- Universidade Federal do MaranhãoBR41 papers
- Universidade Federal Rural de PernambucoBR41 papers
27 papers · 1 filter
Locally Localized Gravity and Geometric Transitions
D. Bazeia, F. A. Brito, A. R. Gomes
In this paper we analyze the local localization of gravity in thick brane embedded in space. The 3-brane is modelled by domain wall solution of a theory with a bulk…
Nonrelativistic Quantum Analysis of the Charged Particle-Dyon System on a Conical Spacetime
A. L. Cavalcanti de Oliveira, E. R. Bezerra de Mello
In this paper we develop the nonrelativistic quantum analysis of the charged particle-dyon system in the spacetime produced by an idealized cosmic string. In order to do that, we a…
Photon deflection by a Coulomb field in noncommutative QED
C. A. de S. Pires
In noncommutative QED photons present self-interactions in the form of triple and quartic interactions. The triple interaction implies that, even though the photon is electrically…
On the Lorentz symmetry of the noncommutative chiral bosons
E. M. C. Abreu, R. Menezes, C. Wotzasek
We study issues of Lorentz violation symmetry in the context of the recently proposed theory of noncommutative fields \cite{CCGM}, using the soldering formalism. To this end a nonc…
Defect structures in sine-Gordon-like models
D. Bazeia, L. Losano, R. Menezes
We investigate several models described by real scalar fields, searching for topological defects. Some models are described by a single field, and support one or two topological se…
On Duality Symmetry in Charged P-Form Theories
Roberto Menezes, Clovis Wotzasek
We study duality transformation and duality symmetry in the the electromagnetic-like charged p-form theories. It is shown that the dichotomic characterization of duality groups as…
Self-Interactions in the Spacetime of a Scalar-Tensor Cosmic String
I. V. L. Costa, F. A. Oliveira, M. E. X. Guimaraes +1
We study the effect of the geometry and topology of a scalar-tensor cosmic string space-time on the electric and magnetic fields of line sources. It is shown that the dilatonic cou…
Some boundary effects in quantum field theory
V. B. Bezerra, M. A. Rego-Monteiro
We have constructed a quantum field theory in a finite box, with periodic boundary conditions, using the hypothesis that particles living in a finite box are created and/or annihil…
AdS and stabilized extra dimensions in multidimensional gravitational models with nonlinear scalar curvature terms 1/R and R^4
Uwe Guenther, Alexander Zhuk, Valdir Bezerra +1
We study multidimensional gravitational models with scalar curvature nonlinearities of the type 1/R and R^4. It is assumed that the corresponding higher dimensional spacetime manif…
Squared-field amplitude modulus and radiation intensity nonequivalence within nonlinear slabs
Alberto Lencina, Pablo Vaveliuk
This paper presents a novel approach to wave propagation inside the Fabry-Perot framework. It states that the time-averaged Poynting vector modulus could be nonequivalent with the…
On the control of the lateral Casimir force between corrugated surfaces
E. V. Blagov, G. L. Klimchitskaya, U. Mohideen +1
The general perturbative expression for the lateral Casimir force between two plates covered by longitudinal corrugations of arbitrary shape is obtained. This expression is applica…
Geometric Phase for Fermionic Quasiparticles Scattering by Disgyration in Superfluids
L. C. Garcia de Andrade, A. M. de M. Carvalho, C. Furtado
We consider a Volovik's analog model for description of a topological defects in a superfluid and we investigate the scattering of quasiparticles in this background. The analog of…
First observation of a narrow charm-strange meson DsJ(2632) -> Ds eta and D0 K+
The SELEX Collaboration, A. V. Evdokimov
We report the first observation of a charm-strange meson DsJ(2632) at a mass of 2632.6+/-1.6 MeV/c^2 in data from SELEX, the charm hadro-production experiment E781 at Fermilab. Thi…
New results for deformed defects
C. A. Almeida, D. Bazeia, L. Losano +1
We extend a deformation prescription recently introduced and present some new soluble nonlinear problems for kinks and lumps. In particular, we show how to generate models which pr…
Lorentz-breaking effects in scalar-tensor theories of gravity
V. B. Bezerra, C. N. Ferreira, J. A. Helayel-Neto
In this work, we study the effects of breaking Lorentz symmetry in scalar-tensor theories of gravity taking torsion into account. We show that a space-time with torsion interacting…
Velocity Distribution in a Viscous Granular Gas
Alexandre Rosas, Daniel ben-Avraham, Katja Lindenberg
We investigate the velocity relaxation of a viscous one-dimensional granular gas, that is, one in which neither energy nor momentum is conserved in a collision. Of interest is the…
Upper limit on the decay Sigma(1385)- --> Sigma- gamma, and cross section for gamma Sigma- --> Lambda pi-
SELEX Collaboration, V. V. Molchanov
Coherent Lambda pi- production on Pb of 600 GeV Sigma- hyperons has been studied with the SELEX facility at Fermilab. Using the Primakoff formalism, we set a 90% CL upper limit on…
More on deviation from bi-maximal neutrino mixing
C. A. de S. Pires
We study the case of presenting the exact bi-maximal mixing form with inducing the deviation from the bi-maximal mixing in the final form of the Pontecorvo-Maki-Nakag…
Chern-Simons-like action induced radiatively in General Relativity
T. Mariz, J. R. Nascimento, E. Passos +1
The Chern-Simons-like gravitational action is evaluated explicitly in four dimensional space-time by radiative corrections at one-loop level. The calculation is performed in fermio…
Bloch Brane
D. Bazeia, A. R. Gomes
We investigate a system described by two real scalar fields coupled with gravity in (4, 1) dimensions in warped spacetime involving one extra dimension. The results show that the p…
Effects of Anomalous Magnetic Moment in the Quantum Motion of Neutral Particle in Magnetic and Electric Fields Produced by a Linear Source in a Conical Spacetime
E. R. Bezerra de Mello
In this paper we analyse the effect of the anomalous magnetic moment on the non-relativistic quantum motion of a neutral particle in magnetic and electric fields produced by linear…
On the Geometry of Dark Energy
M. D. Maia, E. M. Monte, J. M. F. Maia +1
Experimental evidence suggests that we live in a spatially flat, accelerating universe composed of roughly one-third of matter (baryonic + dark) and two-thirds of a negative-pressu…
Testing Non commutative QED gamma-gamma-gamma and gamma-gamma-gamma-gamma Couplings at LHC
S. M. Lietti, C. A. de S. Pires
In this work, we investigate the sensitivity of the process p + p --> q + q --> j + j + gamma + gamma at LHC for the photonic 3- and 4- point functions that appear in non commutati…
Theory confronts experiment in the Casimir force measurements: quantification of errors and precision
F. Chen, G. L. Klimchitskaya, U. Mohideen +1
We compare theory and experiment in the Casimir force measurement between gold surfaces performed with the atomic force microscope. Both random and systematic experimental errors a…