Thermal Green Functions at Zero Energy

Abstract

The thermal expectation values of all possible bosonic generalised retarded functions evaluated at zero energy are studied. The relationship of such functions to calculational schemes, technical problems and physical applications is outlined. It is then shown that all generalised retarded functions constructed from any one set of bosonic fields are equal at zero energy. This is done completely generally and is not limited to any approximation scheme such as perturbation theory.

16 pages, LaTeX (no figures), available through anonymous ftp as LaTeX from ftp://euclid.tp.ph.ic.ac.uk/papers/94-5_26.tex or as LaTeX or postscript at http://euclid.tp.ph.ic.ac.uk/Papers/index.html

References in corpus (5)

• Analytic Continuation of Thermal $N$-Point Functions from Imaginary- to Real-Energies
• On the Derivative Expansion at Finite Temperature
• On the Analytic Structure of the Self-Energy for Massive Gauge Bosons at Finite Temperature
• Retarded-Advanced N-point Green Functions in thermal field theories
• Thermal Self-Energies at Zero Momentum

Cited by in corpus (4)

• Triangle Anomalies, Thermodynamics, and Hydrodynamics
• Analytic Properties of Finite-Temperature Self-Energies
• Ambiguities in the zero momentum limit of the thermal ${\pi }^o\gamma \gamma$ triangle diagram
• Transport Coefficients and Analytic Continuation in Dual 1+1 Dimensional Models at Finite Temperature