ABSTRACT The Wilkinson Microwave Anisotropy Probe (WMAP) 5-year data provide
stringent limits on deviations from the minimal, six-parameter Λ cold dark matter model. We …

We obtain an exact vacuum solution from the gravity sector contained in the minimal
standard-model extension. The theoretical model assumes a Riemann spacetime coupled to …

We have considered the bumblebee gravity model where lorentz-violating (LV) scenario
gets involved through a bumblebee field vector field B_ μ B μ. A spontaneous symmetry …

Spacetime-varying coupling constants can be associated with violations of local Lorentz
invariance and CPT symmetry. An analytical supergravity cosmology with a time-varying fine …

Within the classical Maxwell-Chern-Simons limit of the standard-model extension, the
emission of light by uniformly moving charges is studied confirming the possibility of a …

We search for signatures of Lorentz and CPT violations in the cosmic microwave
background (CMB) temperature and polarization anisotropies by using the Wilkinson …

The non-minimal coupling of fermions to a background responsible for the breaking of
Lorentz symmetry is introduced in Dirac's equation; the non-relativistic regime is …

The emission of electromagnetic radiation by charges moving uniformly in a Lorentz-
violating vacuum is studied. The analysis is performed within the classical Maxwell-Chern …

There is a unique Lorentz-violating modification of the Maxwell theory of photons, which
maintains gauge invariance, CPT, and renormalizability. Restricting the modified-Maxwell …

In this work, we study the interaction of quantum gases in Lorentz-violating scenarios
considering both boson and fermion sectors. In the latter case, we investigate the …