Photon and electron spectra in hot and dense QED

Details Photon and electron spectra in hot and dense QED Photon and electron spectra in hot and dense QED

1998-02-26

arxiv.org/abs/hep-ph/9802427v1

Phys.Scripta 58 (1998) 310-314

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, latex, no figures

Scientific paper

10.1088/0031-8949/58/4/005

Photon and electron spectra in hot and dense QED are found in the high temperature limit for all $|\q|$ using the Feynman gauge and the one-loop self-energy. All spectra are split by the medium and their branches develop the gap (the dynamical mass) at zero momentum. The photon spectrum has two branches (longitudinal and transverse) with the common mass; but electron spectrum is split on four branches which are well-separated for any $|\q|$ including their $|\q|=0$ limits (their effective masses). These masses and the photon thermal mass are calculated explicitly and the different limits of spectrum branches are established in detail. The gauge invariance of the high-temperature spectra is briefly discussed.

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