2018/04/30 by T. Mariz, J. R. Nascimento, A. Yu. Petrov +2
Medicine · Physics and Astronomy · #Black Holes and Theoretical Physics #Dispersion relation #Extension (predicate logic) #Gauge theory #Lorentz transformation #Mathematical physics #Neuroblastoma Research and Treatments #Noncommutative and Quantum Gravity Theories #Particle physics #Physics #Quantum electrodynamics #Quantum mechanics #Spinor #Theoretical physics #Unitarity #hep-th
paper · pdf · doi:10.1103/physrevd.99.096012
published as Phys. Rev. D 99, 096012 (2019) · 29 pages, matches published version
arxiv created 2019/05/13 · openalex publication_date 2019/05/13 · arxiv updated 2019/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the higher-derivative Lorentz-breaking extension of QED, where the new terms are the Myers-Pospelov-like ones in gauge and spinor sectors, and the higher--derivative Carroll-Field-Jackiw term. For this theory, we study its tree-level dynamics, discuss the dispersion relation, and present one more scheme for its perturbative generation, including the finite-temperature case. Also, we develop a method to study perturbative unitarity based on consistent rotation of the theory to Euclidean space. We use this method to verify explicitly that for special choices of the Lorentz-breaking vector the unitarity is preserved at the one-loop level, even in the presence of higher time derivatives.