QED with chiral nonminimal coupling: aspects of the Lorentz-violating quantum corrections

被引：32
|
作者：
Baeta Scarpelli, A. P. [1 ]
机构：
[1] Dept Policia Fed, Setor Tecn Cient, Sao Paulo, Brazil
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2012年 / 39卷 / 12期
关键词：
RADIATIVELY INDUCED LORENTZ; CHERN-SIMONS SHIFT; CPT VIOLATION; IMPLICIT REGULARIZATION; GAUGE-INVARIANCE; SPECIAL RELATIVITY; SYMMETRY-BREAKING; FIELD-THEORIES; ELECTRODYNAMICS; AMBIGUITIES;
D O I：
10.1088/0954-3899/39/12/125001
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
An effective model for QED with the addition of a nonminimal coupling with a chiral character is investigated. This term, which is proportional to a fixed 4-vector b(mu), violates Lorentz symmetry and may originate a CPT-even Lorentz breaking term in the photon sector. It is shown that this Lorentz breaking CPT-even term is generated and that, in addition, the chiral nonminimal coupling requires that this term is present from the beginning. The nonrenormalizability of the model is invoked in the discussion of this fact and the result is compared with the one from a model with a Lorentz-violating nonminimal coupling without chirality.
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页数：8
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