Photon polarization tensor in circularly polarized Hermite- and Laguerre-Gaussian beams
arXiv:1712.08898 · doi:10.1142/S021773231850044X
Abstract
We derive analytical expressions for the photon polarization tensor in circularly polarized Hermite- and Laguerre-Gaussian beams, complementing the corresponding results for linearly polarized beams obtained recently. As they are based upon a locally constant field approximation of the one-loop Heisenberg-Euler effective Lagrangian for quantum electrodynamics (QED) in constant fields, our results are generically limited to slowly varying electromagnetic fields, varying on spatial (temporal) scales much larger than the Compton wavelength (time) of the electron.
6 pages; Contribution to the LPHYS'17 Conference Proceedings
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