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

Win-Fun Kao*, Guey-Lin Lin, Jie Jun Tseng

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    3 Scopus citations

    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 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.

    Original languageEnglish
    Pages (from-to)257-265
    Number of pages9
    JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    Volume522
    Issue number3-4
    DOIs
    StatePublished - 13 Dec 2001

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