QED at Finite Temperature in the Coulomb Gauge
| dc.creator | D'Olivo, J. C. | |
| dc.creator | Nieves, J. F. | |
| dc.creator | Torres, M. | |
| dc.creator | Tututi, E. | |
| dc.date | 1994-02-03 | |
| dc.date.accessioned | 2026-07-07T03:56:42Z | |
| dc.date.available | 2026-07-07T03:56:42Z | |
| dc.description | We argue that calculations in QED at finite temperature are more conveniently carried out in the Coulomb gauge, in which only the physical photon degrees of freedom play a rol and are thermalized. We derive the photon propagator in this gauge for real-time finite temperature calculations and show that the four-fermion static Coulomb interaction that appears in the Lagrangian can be accounted for by suitably modifying the photon propagator. The Feynman rules of the theory are written in a manifestly covariant form, although they depend on the velocity 4-vector $u_μ$ of the background medium. As a first step in showing the consistency and usefulness of this approach, we consider the one-loop calculation of the electron self-energy $Σ$. It is explicitly shown that the divergences that arise from the vacuum contribution to $Σ$ are independent of $u_μ$, which implies that the counter terms that must be included in the Lagrangian are the same as those in the vacuum. | |
| dc.description | 15 pages, Latex, LTP-036-UPR | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9402222 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9402222 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/45091 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | QED at Finite Temperature in the Coulomb Gauge | |
| dc.type | text |