The Finite-Temperature Feynman Propagator in Operator Form

Details The Finite-Temperature Feynman Propagator in Operator Form The Finite-Temperature Feynman Propagator in Operator Form

1995-10-06

arxiv.org/abs/hep-ph/9510248v2

Phys.Rev. D53 (1996) 7265-7269

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages plain TeX

Scientific paper

10.1103/PhysRevD.53.7265

In momentum space the Feynman propagator $D_{F}(k)$ at non-zero temperature is defined by a simple dispersion relation with the familiar property of being an even function of $k^{0}$ and analytic for Re$(k^{0})^{2}>0$. The coordinate space form of the propagator $D_{F}(x)$ is expressed directly in terms of matrix elements of the field operator and requires a new type of operator ordering.

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