Physical (ir)relevance of ambiguities to Lorentz and CPT violation in QED - INSPIRE

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Physical (ir)relevance of ambiguities to Lorentz and CPT violation in QED

Manuel Perez-Victoria
(
- MIT, LNS
)

Feb, 2001

15 pages

Published in:

JHEP 04 (2001) 032

e-Print:

hep-th/0102021 [hep-th]

DOI:

10.1088/1126-6708/2001/04/032

Report number:

MIT-CTP-3081

View in:

ADS Abstract Service

reference search158 citations

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Abstract: (IOP)

We discuss the regularization and renormalization of QED with Lorentz and CPT violation, and argue that the coefficient of the Chern-Simons term is an independent parameter not determined by gauge invariance. We also study these issues in a model with spontaneous breaking of Lorentz and CPT symmetries and find an explicit relation with the ABJ anomaly. This explains the observed convergence of the induced Chern-Simons term.

Note:

16 pages, references added

quantum electrodynamics
violation: Lorentz
violation: CPT
regularization
Chern-Simons term
spontaneous symmetry breaking
invariance: gauge
anomaly
radiative correction

References(45)

Figures(0)

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