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Feynman Rules for Gauge Theories at Finite Temperature

Apr, 1974
25 pages
Published in:
  • Phys.Rev.D 9 (1974) 3312
DOI:
Report number:
  • Print-74-0873 (HARVARD)
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Abstract: (APS)
Feynman's functional formulation of statistical mechanics is used to study general-relativistic quantum field theories at finite temperature. The techniques are then applied to gauge theories. The partition function Tre−βH is discovered to be a gauge-dependent quantity which is meaningless in most gauges. Instead, we define a physically meaningful partition function which is gauge-invariant and only equal to Tre−βH in certain "physical" gauges. Feynman rules for this partition function and for finite-temperature Green's functions are derived for a general gauge.
Note:
  • Discovered after the fact : 7/13/83