Improved hard thermal loop effective action for hot QED and QCD
Sep, 199521 pages
Published in:
- Nucl.Phys.B 464 (1996) 279-297
e-Print:
- hep-ph/9509313 [hep-ph]
Report number:
- DESY-95-170,
- ITP-UH-23-95
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Abstract:
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.- quantum chromodynamics
- quantum electrodynamics: scalar
- temperature
- gluon: propagator
- gluon: vertex function
- effective action
- invariance: gauge
- fermion: propagator
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