Gauge-independent resummed gluon self-energy in hot QCD

Details Gauge-independent resummed gluon self-energy in hot QCD Gauge-independent resummed gluon self-energy in hot QCD

1996-11-16

arxiv.org/abs/hep-ph/9611341v1

Nucl.Phys. B490 (1997) 472-504

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages (including 6 figures), Latex

Scientific paper

10.1016/S0550-3213(97)00068-0

The pinch technique (PT) is applied to obtain the gauge-independent resummed gluon self-energy in a hot Yang-Mills gas. Calculation is performed at one- loop level in linear gauges which preserve rotational invariance and the res ummed propagators and vertices are used. The effective gluon self-energy, w hich is obtained as the sum of the resummed gluon self-energy and the resumm ed pinch contributions, is not only gauge-independent but also satisfies the transversality relation. Using this gauge-independent effective gluon self- energy, we calculate the damping rate for transverse gluons in the leading o rder and show that the result coincides with the one obtained by Braaten and Pisarski.

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