Infrared Sensitivity in Damping Rate for Very Soft Moving Fermions in Finite Temperature QED
Abstract
We calculate the fermion damping rate to second order in powers of the external momentum p in the context of QED at finite temperature using the hard-thermal-loop (HTL) summation scheme. We find that the coefficient of order p2 is divergent in the infrared whereas the two others are finite. This result suggests that the htl-based pertubation is infrared sensitive at next-to-leading order.
0
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.