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Covariant gauges at finite temperature
A prescription is presented for real-time finite-temperature perturbation theory in covariant gauges, in which only the two physical degrees of freedom of the gauge-field propagator acquire thermal parts. The propagators for the unphysical degrees of freedom of the gauge field, and for the Faddeev-P...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1992
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0550-3213(92)90089-T https://dx.doi.org/10.1016/0550-3213(93)90181-N http://cds.cern.ch/record/557379 |
| Sumario: | A prescription is presented for real-time finite-temperature perturbation theory in covariant gauges, in which only the two physical degrees of freedom of the gauge-field propagator acquire thermal parts. The propagators for the unphysical degrees of freedom of the gauge field, and for the Faddeev-Popov ghost field, are independent of temperature. This prescription is applied to the calculation of the one-loop gluon self-energy and the two-loop interaction pressure, and is found to be simpler to use than the conventional one. |
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