Gauge Dependence of the Resummed Thermal Gluon Self Energy

Details Gauge Dependence of the Resummed Thermal Gluon Self Energy Gauge Dependence of the Resummed Thermal Gluon Self Energy

1992-06-21

arxiv.org/abs/hep-ph/9206239v1

Nucl.Phys. B388 (1992) 287-314

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages, report BI-TP 92/19, LPTHE-Orsay 92/32, WIN-TH-92/02 (June 1992)

Scientific paper

10.1016/0550-3213(92)90614-H

The gauge dependence of the hot gluon self energy is examined in the context of Pisarski's method for resumming hard thermal loops. Braaten and Pisarski have used the Ward identities satisfied by the hard corrections to the n-point functions to argue the gauge fixing independence of the leading order resummed QCD plasma damping rate in covariant and strict Coulomb gauges. We extend their analysis to include all linear gauges that preserve rotational invariance and display explicitly the conditions required for gauge fixing independence. It is shown that in covariant gauges the resummed damping constant is gauge fixing independent only if an infrared regulator is explicitly maintained throughout the calculation.

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