28 citations · 40 across the 3 of their papers we have counts for
3 papers
Perturbative unitarity and higher-order Lorentz symmetry breaking
Leonardo Balart, Carlos M. Reyes, Sebastian Ossandon +1
We study perturbative unitarity in the scalar sector of the Myers-Pospelov model. The model introduces a preferred four-vector which breaks Lorentz symmetry and couples to a fi…
Polymer quantization, stability and higher-order time derivative terms
Patricio Cumsille, Carlos M. Reyes, Sebastian Ossandon +1
The stability of higher-order time derivative theories using the polymer extension of quantum mechanics is studied. First, we focus on the well-known Pais-Uhlenbeck model and by ca…
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…