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Particles and Fields
Eur. Phys. J. C 1, 619-625

Three-point functions at finite temperature

M.E. Carrington - U. Heinz

Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany

Received: 7 March 1997, Revised version: 16 May 1997

Abstract
We study 3-point functions at finite temperature in the closed time path formalism. We give a general decomposition of the eight component tensor in terms of seven vertex functions. We derive a spectral representation for these seven functions in terms of two independent real spectral functions. We derive relationships between the seven functions and obtain a representation of the vertex tensor that greatly simplifies calculations in real time.


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