Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3600
Título: Radiatively induced Lorentz and CPT violation in Schwinger constant field approximation
Autor: Chaichian, M.
Chen, W. F.
Felipe, R. G.
Palavras-chave: Chern-Simons Term
Differential Regularization
Derivative Expansion
Standard Model
Electrodynamics
Limits
Data: 22-Mar-2001
Editora: Elsevier Science BV
Citação: CHAICHIAN, M.; CHEN, W. F.; FELIPE, R. G. - Radiatively induced Lorentz and CPT violation in Schwinger constant field approximation. Physics Lettres B. ISSN 0370-2693. Vol. 503, nr. 1-2 (2001), p. 215-222.
Resumo: The Schwinger proper-time method is an effective calculation method, explicitly gauge-invariant and nonperturbative. We make use of this method to investigate the radiatively induced Lorentz- and CPT-violating effects in quantum electrodynamics when an axial-vector interaction term is introduced in the fermionic sector. The induced Lorentz- and CPT-violating Chern-Simons term coincides with the one obtained using a covariant derivative expansion but differs from the result usually obtained in other regularization schemes. A possible ambiguity in the approach is also discussed. (C) 2001 Published by Elsevier Science B.V.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3600
ISSN: 0370-2693
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0370269301001964
Aparece nas colecções:ISEL - Física - Artigos

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