10 papers
Higher derivative Hořava-Lifshitz fermions: from superconductivity to atomic spectroscopy
A. A. Araújo Filho, K. E. L. de Farias, N. Heidari +2
We investigate an isotropic Hořava-Lifshitz fermion theory supplemented by a dimension-six spatial derivative operator, preserving first order time evolution while modifying the ul…
Newtonian Potential in Weyl Gravitoelectromagnetism
L. A. S. Evangelista, A. F. Santos
The gauge structure of the Weyl Gravitoelectromagnetic (GEM) formalism has been investigated, showing that although the theory admits additional propagating modes, only an effectiv…
Geometric and Statistical Thermo Field Dynamics in de Sitter Spacetime
D. S. Cabral, L. A. S. Evangelista, J. C. R. de Souza +1
The dynamics of a massive scalar field non-minimally coupled to gravity in an expanding de Sitter universe are investigated. It is shown that a comoving observer identifies the Bun…
Electromagnetic dynamics and geometric transport in spin-nondegenerate SME particles
A. A. Araújo Filho, A. F. Santos, J. A. A. S. Reis +2
We investigate the electromagnetic dynamics of spin-nondegenerate classical particle models arising from Lorentz-violating sectors of the Standard-Model Extension, focusing on the…
Casimir phenomena in bumblebee gravity
D. S. Cabral, A. A. Araújo Filho, A. F. Santos
In this work, we analyze the Casimir effect associated with a massive, non-minimally coupled scalar field in static, spherically symmetric black hole spacetimes arising in bumblebe…
Thermal Bhabha scattering under the influence of non-hermiticity effects
D. S. Cabral, A. F. Santos, R. Bufalo
In this paper, we investigate the Bhabha scattering process within the framework of non-Hermitian QED at finite temperature. In this theory, the hermiticity condition, typically re…
Gravitational Lorentz-violating scattering
L. A. S. Evangelista, A. F. Santos
We investigate the gravitational scattering process within the framework of gravitoelectromagnetism, a weak-field approximation of gravity analogous to Ma…
Thermal and Casimir effects in a Lorentz-violating massive scalar field
D. S. Cabral, L. H. A. R. Ferreira, L. A. S. Evangelista +1
In this work, a massive scalar field theory incorporating Lorentz violation is investigated. The symmetry breaking is introduced via a background traceless antisymmetric tensor. Wi…
Electron-positron scattering at finite temperature in Podolsky electrodynamics
D. S. Cabral, L. A. S. Evangelista, L. H. A. R. Ferreira +1
The electron-positron annihilation process is investigated within the framework of Podolsky's generalized electrodynamics at finite temperature. In this theory, a higher-derivative…
Gravitational Compton scattering at zero and finite temperature
L. A. S. Evangelista, A. F. Santos
The Lagrangian formulation of Gravitoelectromagnetism (GEM) theory is considered. GEM is a gravitational theory constructed based on the similarities between gravity and electromag…