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Introduction to Thermal Field Theory

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Author: T. Altherr
Url: http://xxx.lanl.gov/abs/hep-ph/9307277
Format: Ps, Pdf
Category: Thermal Field Theory
Pages: 24
Clicks: 1967

Description
This is intended to be a very basic introduction and short (and of course incomplete) overview of thermal field theory. In the first part, I introduce the thermal propagator at a very simple level and give the Feynman rules using the time-path contour method. In the second part, I give examples of these rules in scalar theory and discuss the origin of the thermal mass and other important effects as infrared divergences and phase transitions. In the third part, I outline the resummation program of Braaten and Pisarski.

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