47 citations · 106 across the 5 of their papers we have counts for
5 papers
Spontaneous Lorentz symmetry breaking and cosmological constant
T. Mariz, J. R. Nascimento, A. Yu. Petrov +2
This paper has been withdrawn by the authors due to need of essential revision.
On the ambiguities in the effective action in Lorentz-violating gravity
M. Gomes, T. Mariz, J. R. Nascimento +3
We investigate the occurrence of ambiguities for Lorentz-violating gravitational Chern-Simons term. It turns out that this term is accompanied by a coefficient depending on an unde…
Dynamical Lorentz and CPT symmetry breaking in a 4D four-fermion model
M. Gomes, T. Mariz, J. R. Nascimento +1
In a 4D chiral Thirring model we analyse the possibility that radiative corrections may produce spontaneous breaking of Lorentz and CPT symmetry. By studying the effective potentia…
Lorentz violation and the proper-time method
T. Mariz, J. R. Nascimento, A. Yu. Petrov +2
In this paper, we apply the proper-time method to generate the Lorentz-violating Chern-Simons terms in the four-dimensional Yang-Mills and non-linearized gravity theories. It is sh…
Anomaly cancellation in three-dimensional noncommutative gauge theories
M. Gomes, T. Mariz, J. R. Nascimento +3
The anomaly found by Callan and Harvey is shown to be cancelled in a three-dimensional noncommutative gauge theory coupled to a fermion with a mass function depending on one spatia…