Some aspects of thermal field theories

Details Some aspects of thermal field theories Some aspects of thermal field theories

1996-12-20

arxiv.org/abs/hep-ph/9612432v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, Latex, 8 figures included by \epsfbox

Scientific paper

Different formalisms used in the perturbative approach to Thermal Field Theory (TFT) are briefly reviewed. The rate of production of a virtual photon in a quark-gluon plasma is then discussed to illustrate some features of TFT before introducing the Hard Thermal Loop resummation which improves the behaviour of the theory in the infrared sector. Some of the successes of this appraoch are described before turning to the problems associated to the undamped transverse gluon oscillations and the light-cone singularities arising when on-shell and/or massless particles are involved.

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