PHOTON AND ELECTRON-SPECTRA IN HOT AND DENSE OED

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-loo p self-energy. All spectra are split by the medium and their branches develop a gap (the dynamical mass) at zero momentum. The photon spectr um has two branches (longitudinal and transverse) with a common mass; but the electron spectrum is split on four branches which are well-sep arated for any 141 including their \q\ = 0 limits (their effective mas ses). These masses together with the photon mass are calculated explic itly for any m, mu- parameters and many other limits of the spectra fo und are also studied in detail. The gauge invariance of the high-tempe rature spectra is briefly discussed.