Causality and radiatively induced CPT violation
高能物理 - 理论
2009-11-07 v3 高能物理 - 唯象学
摘要
We consider quantum electrodynamics with an additional Lorentz- and CPT-violating axial-vector term in the fermionic sector and discuss the possibility that radiative corrections induce a Lorentz- and CPT-violating Chern-Simons-like term for the gauge field. From the requirement of causality and the assumed validity of perturbation theory, we conclude that the induced Chern-Simons-like term must be absent in the full quantum field theory.
引用
@article{arxiv.hep-th/0105037,
title = {Causality and radiatively induced CPT violation},
author = {C. Adam and F. R. Klinkhamer},
journal= {arXiv preprint arXiv:hep-th/0105037},
year = {2009}
}
备注
LaTeX, 12 pages, 2 PS figures, v3: to appear in PLB