Zero Energy and Thermodynamic Equilibrium
Mar, 198825 pages
Published in:
- Z.Phys.C 41 (1988) 333
DOI:
Report number:
- Print-88-0392 (ALBERTA)
Citations per year
Abstract: (Springer)
Using path integral techniques, it is shown that the real time formalism for finite temperature field theory requires an extra Feynman rule for Feynman diagrams carrying zero-external energies. This is related to a general principle governing the use of equilibrium finite temperature field theory. It is shown that only with this extra Feynman rule does the real time formalism become consistent for zero energy calculations. It is also used to understand the problem of the lack of analyticity at zero external four-momenta encountered in finite temperature field theory diagrams.- FIELD THEORY: FINITE TEMPERATURE
- FIELD THEORY: PATH INTEGRAL
- FIELD THEORY: SCALAR
- N-POINT FUNCTION
- THERMODYNAMICS
- FEYNMAN GRAPH
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