Zobrazeno 1 - 10
of 47
pro vyhledávání: '"de Brito, G. P."'
Publikováno v:
Phys. Rev. D 102, 084015 (2020)
We investigate spin- and velocity-dependent contributions to the gravitational inter-particle potential. The methodology adopted here is based on the expansion of the effective action in terms of form factors encoding quantum corrections. Restricting
Externí odkaz:
http://arxiv.org/abs/2006.12824
We investigate 1-loop contributions to the 2- and 4-point correlation functions within a theory for fermions with mass dimension one with a simple quartic self-interaction term. The 1-loop divergence appearing the self-energy function can be consiste
Externí odkaz:
http://arxiv.org/abs/1912.02912
Publikováno v:
Phys. Rev. D 98, 064029 (2018)
We investigate some classical and quantum aspects of a general class of higher derivative theories of gravity. We propose a generalized version of the so-called Teyssandier gauge condition and we investigative its implications on the linearized field
Externí odkaz:
http://arxiv.org/abs/1707.02083
A simple expression for calculating the classical potential concerning $D$-dimensional gravitational models is obtained through a method based on the generating functional. The prescription is then used as a mathematical tool to probe the conjecture
Externí odkaz:
http://arxiv.org/abs/1702.07404
Publikováno v:
Phys. Rev. D 95, 016006 (2017)
We investigate the interparticle potential between spin-0, -1/2 and -1 sources interacting in modified electrodynamics in the non-relativistic regime. By keeping terms of $\mathcal{O}( |{\bf p}|^2/m^2 )$ in the amplitudes, we obtain spin- and velocit
Externí odkaz:
http://arxiv.org/abs/1612.01181
In this paper we introduce a modified covariant quantum algebra based in the so-called Quesne-Tkachuk algebra. By means of a deformation procedure we arrive at a class of higher derivative models of gravity. The study of the particle spectra of these
Externí odkaz:
http://arxiv.org/abs/1610.01480
Publikováno v:
Phys. Rev. D 94, 056005 (2016)
We determine the effect of a CPT-even and Lorentz violating non-minimal coupling on the differential cross sections for some of the most important tree-level processes in QED, namely, Compton and Bhabha scatterings, as well as electron-positron annih
Externí odkaz:
http://arxiv.org/abs/1605.08059
Autor:
de Gracia, G. B., de Brito, G. P.
Following a procedure recently utilized by Accioly et al. to obtain the D-dimensional interparticle potential energy for electromagnetic models in the nonrelativistic limit, and relaxing the condition assumed by the authors concerning the conservatio
Externí odkaz:
http://arxiv.org/abs/1509.06579
It is shown that the consideration of the braneworld consistency conditions within the framework of bulk modified gravities allows for the existence of thick branes in the five- dimensional case with compact extra dimension. In studing the specific c
Externí odkaz:
http://arxiv.org/abs/1507.07157
Publikováno v:
Phys. Rev. D 91, 086016 (2015)
In this work we present a new class of braneworld models, where the superpotential function may be decomposed in a very specific form, but still embracing, which allows considerable simplifications in the field equations. We exemplify the method with
Externí odkaz:
http://arxiv.org/abs/1412.5543