TY - JOUR

T1 - On analytic properties of the photon polarization function in a background magnetic field

AU - Kao, Win-Fun

AU - Lin, Guey-Lin

AU - Tseng, Jie Jun

PY - 2001/12/13

Y1 - 2001/12/13

N2 - 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 ω with ω < 2me. Based upon this energy expansion and the branch cut of the photon polarization function in the complex ω 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-field strengths. The applications of our approach are briefly discussed.

AB - 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 ω with ω < 2me. Based upon this energy expansion and the branch cut of the photon polarization function in the complex ω 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-field strengths. The applications of our approach are briefly discussed.

UR - http://www.scopus.com/inward/record.url?scp=0035856727&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(01)01296-5

DO - 10.1016/S0370-2693(01)01296-5

M3 - Article

AN - SCOPUS:0035856727

VL - 522

SP - 257

EP - 265

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 3-4

ER -