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arxiv: hep-ph/9205235 · v2 · submitted 1992-05-26 · ✦ hep-ph

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Covariant gauges at finite temperature

P V Landshoff , A Rebhan
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classification ✦ hep-ph
keywords covariantdegreesfieldfreedomgaugesprescriptiontemperatureacquire
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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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