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Phys. Rev. D 63, 105015 (2001) [6 pages]

Induced Lorentz- and CPT-violating Chern-Simons term in QED: Fock-Schwinger proper time method

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J.-M. Chung*
Asia Pacific Center for Theoretical Physics, Seoul 130-012, Korea

B. K. Chung†
Asia Pacific Center for Theoretical Physics, Seoul 130-012 Korea
Research Institute for Basic Sciences and Department of Physics, Kyung Hee University, Seoul 130-701, Korea

Received 17 January 2001; published 24 April 2001

Using the Fock-Schwinger proper time method, we calculate the induced Chern-Simons term arising from the Lorentz- and CPT-violating sector of quantum electrodynamics with a bμψ̅ γμγ5ψ term. Our result to all orders in b coincides with a recent linear-in-b calculation by M. Chaichian, W. F. Chen, and A. González Felipe, hep-th/0010129v2. The coincidence was pointed out by J.-M. Chung, Phys. Lett. B 461, 138 (1999) and M. Pérez-Victoria, Phys. Rev. Lett. 83, 2518 (1999), in the standard Feynman diagram calculation with the nonperturbative-in-b propagator.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.63.105015
DOI:
10.1103/PhysRevD.63.105015
PACS:
12.20.Ds, 11.30.Cp

*Present address: Research Institute for Basic Sciences and Department of Physics, Kyung Hee University, Seoul 130-701, Korea; Email address: jmchung@khu.ac.kr

†Email address: bkchung@khu.ac.kr

 
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