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Phys. Rev. D 73, 065014 (2006) [9 pages]

Light propagation effects in QED: Effective action approach

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Y. M. Cho*
Department of Physics, College of Natural Sciences, Seoul National University, Seoul 151-742, Korea

D. G. Pak†
Center for Theoretical Physics, Seoul National University, Seoul 151-742, Korea,
and Institute of Applied Physics, Uzbekistan National University, Tashkent 700-095, Uzbekistan

M. L. Walker‡
Department of Physics, Chiba University, 1-33 Yayoi-Cho, Inage-ku, Chiba 263-8522, Japan

Received 9 December 2005; published 15 March 2006

The effects of light propagation in constant magnetic and electric backgrounds are considered in the framework of the effective action approach. We use the exact analytic series representation for the one-loop effective action of QED and apply it to the birefringence effect. Analytical results for the light velocity modes are obtained for the weak and the strong field regime. We present asymptotic formulas for the light velocity modes for the ultrastrong magnetic field which can be realized in some neutron stars.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.73.065014
DOI:
10.1103/PhysRevD.73.065014
PACS:
12.20.−m, 11.10.Ef, 41.20.Jb

*Electronic address: ymcho@yongmin.snu.ac.kr

†Electronic address: dmipak@phya.snu.ac.kr

‡Electronic address: m.walker@aip.org.au

 
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