TITLE

Polarization operator of a photon in a magnetic field

AUTHOR(S)
Katkov, V.
PUB. DATE
August 2016
SOURCE
Journal of Experimental & Theoretical Physics;Aug2016, Vol. 123 Issue 2, p197
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The polarization operator of a photon in a static uniform magnetic field has been studied at photon energies both above and below the threshold of electron-positron pair production by a photon. In the first order of the fine-structure constant α, expressions for the refractive index of a photon with a certain polarization in both low and high fields as compared to the critical field H = 4.41 × 10 G have been obtained. Both the purely quantum range of photon energies, where the particles of a pair are produced at the lowest Landau levels, and the region of applicability of the semiclassical approximation in the case of the population of high energy levels have been considered. A general spectral integral formula has been obtained with divergent threshold terms separated in an explicit form.
ACCESSION #
118060018

 

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