Improved hard-thermal-loop effective action for hot QED and QCD

Details Improved hard-thermal-loop effective action for hot QED and QCD Improved hard-thermal-loop effective action for hot QED and QCD

1995-09-17

arxiv.org/abs/hep-ph/9509313v2

Nucl.Phys. B464 (1996) 279-297

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, LaTeX, requires elsart.sty and epsf.sty, 1 postscript figure, compressed and uuencoded, (new reference [9] added)

Scientific paper

10.1016/0550-3213(96)00023-5

The conventional results for hard thermal loops, which are the building blocks of resummed perturbation theory in thermal field theories, have collinear singularities when external momenta are light-like. It is shown that by taking into account asymptotic thermal masses these singularities are removed. The thus improved hard thermal loops can be summarized by compact gauge-invariant effective actions, generalizing the ones found by Taylor and Wong, and by Braaten and Pisarski.

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