79 citations · 519 across the 31 of their papers we have counts for
8 papers · 1 filter
Renormalization in Nonminimal Lorentz-Violating Field Theory
J. R. Nascimento, A. Yu. Petrov, C. M. Reyes
We provide the first step towards renormalization in a nonminimal Lorentz-violating model consisting of normal scalars and modified fermions with mass dimension five operators. We…
Lorentz-Invariance Violation with Higher-Order Operators
Carlos M. Reyes, Luis F. Urrutia
In this work, in the light of the developments for indefinite metric theories made by Lee and Wick, we study perturbative unitarity in a Lorentz-invariance violating QED model with…
Stability and symmetry breaking in a three Higgs-boson doublet model with lepton family symmetry O(2)xZ2
M. Maniatis, D. Mehta, Carlos M. Reyes
Motivated by the neutrino data, an extension of the Standard Model with three Higgs-boson doublets has been proposed. Imposing an O(2) x Z2 family symmetry, a neutrino mixing matri…
Higher-order Lorentz-invariance violation, quantum gravity and fine-tuning
Carlos M. Reyes, Sebastian Ossandon, Camilo Reyes
The issue of Lorentz fine-tuning in effective theories containing higher-order operators is studied. To this end, we focus on the Myers-Pospelov extension of QED with dimension-fiv…
Unitarity in a Lorentz symmetry breaking model with higher-order operators
Markos Maniatis, Carlos M. Reyes
We analyze the unitarity of a modified QED with higher-order terms that violate Lorentz symmetry. We make an explicit calculation to verify unitarity at the one-loop level. As expe…
Causality and stability for Lorentz-CPT violating electrodynamics with dimension-5 operators
C. Marat Reyes
Stringent limits on the Myers-Pospelov timelike parameter for photons coming from astrophysical tests suggest exploring more general preferred backgrounds, such as spa…