On perturbation theory at finite temperature |
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| Authors: | Duane A. Dicus David Down Edward W. Kolb |
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| Affiliation: | Center for Particle Theory, University of Texas, Austin, TX 78712, USA;Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA |
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| Abstract: | We show that the largest temperature-dependent contribution to the fermion self-energy of order α2 in QED goes as (α2T4/p2)ln[(E + p)/(E ? p)], where p is the 3-momentum and E is the energy, and we speculate on the form of higher-order terms in the perturbation expansion. |
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