Semiclassical approximation for the partition function in QFT

AUTOR(ES)

Bessa, A., Carvalho, C.A.A. de, Fraga, E.S., Gelis, F.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2007-03

RESUMO

In this paper we discuss the semiclassical approximation for the thermodynamics of scalar fields. We construct a semiclassical propagator in terms of two solutions of an ordinary differential equation. The main result is an analytic (non-perturbative) expression for the partition function written in terms of known quantities.

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