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Note on linearized new massive gravity in arbitrary dimensions
(Physical Review D: Particles, Fields, Gravitation and Cosmology, 2013-04-11) [Artigo]
By means of a triple master action we deduce here a linearized version of the new massive gravity (NMG) in arbitrary dimensions. The theory contains a 4th-order and a 2nd-order term in derivatives. The 4th-order term is ...
Atomic radiative transitions in thermo field dynamics
(International Journal of Modern Physics A, 2003-03-20) [Artigo]
In this work we rederive the Lamb-Retherford energy shift for an atomic electron in the presence of a thermal radiation. Using the Dalibard, Dupont-Roc and Cohen-Tannoudji (DDC) formalism, where physical observables are ...
An effective singular oscillator for Duffin-Kemmer-Petiau particles with a nonminimal vector coupling: a two-fold degeneracy
(Journal of Physics A: Mathematical and Theoretical, 2012-02-24) [Artigo]
Scalar and vector bosons in the background of one-dimensional nonminimal vector linear plus inversely linear potentials are explored in a unified way in the context of the Duffin-Kemmer-Petiau theory. The problem is mapped ...
On the asymptotic behavior of effective QED at finite temperature
(European Physical Journal C, 2003-11-01) [Artigo]
The aim of this paper is to study finite temperature effects in effective quantum electrodynamics using Weisskopf's zero-point energy method in the context of thermo, field dynamics. After a general calculation for a weak ...
Axial anomaly through analytic regularization
(Modern Physics Letters A, 1999-01-30) [Artigo]
In this work we consider the two-point Green's functions in (1 + 1)-dimensional quantum electrodynamics and show that the correct implementation of analytic regularization gives a gauge invariant result for the vacuum ...
Causal theory for the gauged Thirring model
(European Physical Journal C, 1999-12-01) [Artigo]
We consider the (2 + 1)-dimensional massive Thirring model as a gauge theory, with one-fermion flavor, in the framework of the causal perturbation theory and address the problem of dynamical mass generation for the gauge ...
Static domain wall in braneworld gravity
(European Physical Journal C, 2014-01-23) [Artigo]
In this paper we consider a static domain wall inside a 3-brane. Different from the standard achievement obtained in General Relativity, the analysis performed here gives a consistency condition for the existence of static ...
Positive tension 3-branes in an AdS(5) bulk
(Journal of High Energy Physics, 2010-09-01) [Artigo]
In this work, we review and extend the so-called consistency conditions for the existence of a braneworld scenario in arbitrary dimensions in the Brans-Dicke (BD) gravitational theory. After that, we consider the particular ...
Testing anomalous Higgs couplings in triple photon production at the Tevatron collider
(Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1998-09-10) [Artigo]
We derive bounds on Higgs and gauge-boson anomalous interactions using the CDF data for the process pp̄ → γγγ + X. We use a linearly realized SU L(2) X U Y(1) invariant effective Lagrangian to describe the bosonic sector ...
Operator ordering in quantum radiative processes
(Physica A: Statistical Mechanics and Its Applications, 2003-05-15) [Artigo]
In this work we reexamine quantum electrodynamics of atomic electrons in the Coulomb gauge in the dipole approximation and calculate the shift of atomic energy levels in the context of Dalibard, Dupont-Roc and Cohen-Tannoudji ...