Photon propagation in slowly varying electromagnetic fields
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Publication:1706182
DOI10.1007/S11182-017-0974-1zbMATH Open1382.81227arXiv1607.01546OpenAlexW2475031883MaRDI QIDQ1706182
Publication date: 21 March 2018
Published in: Russian Physics Journal (Search for Journal in Brave)
Abstract: We study the effective theory of soft photons in slowly varying electromagnetic background fields at one-loop order in QED. This is of relevance for the study of all-optical signatures of quantum vacuum nonlinearity in realistic electromagnetic background fields as provided by high-intensity lasers. The central result derived in this article is a new analytical expression for the photon polarization tensor in two linearly polarized counter-propagating pulsed Gaussian laser beams. As we treat the peak field strengths of both laser beams as free parameters this field configuration can be considered as interpolating between the limiting cases of a purely right- or left-moving laser beam (if one of the peak field strengths is set to zero) and the standing-wave type scenario with two counter-propagating beams of equal strength.
Full work available at URL: https://arxiv.org/abs/1607.01546
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