Title: On analytic properties of the photon polarization function in a background magnetic field
Authors: Kao, WF
Lin, GL
Tseng, JJ
物理研究所
Institute of Physics
Issue Date: 13-Dec-2001
Abstract: We examine the analytic properties of the photon polarization function in a background magnetic field, using the technique of inverse Mellin transform. The photon polarization function is first expressed as a power series of the photon energy omega with omega < 2m(e). Based upon this energy expansion and the branch cut of the photon polarization function in the complex omega plane. we compute the absorptive part of the polarization function with the inverse Mellin transform. Our results are valid for arbitrary photon energies and magnetic-fieid strengths. The applications of our approach are briefly discussed. (C) 2001 Published by Elsevier Science B.V.
URI: http://dx.doi.org/10.1016/S0370-2693(01)01296-5
http://hdl.handle.net/11536/29191
ISSN: 0370-2693
DOI: 10.1016/S0370-2693(01)01296-5
Journal: PHYSICS LETTERS B
Volume: 522
Issue: 3-4
Begin Page: 257
End Page: 265
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