THERMO FIELD DYNAMICS-Reference-Cited by-同舟云学术

THERMO FIELD DYNAMICS

Published:1996-06-30 Issue:13n14 Volume:10 Page:1755-1805
ISSN:0217-9792
Container-title:International Journal of Modern Physics B
language:en
Short-container-title:Int. J. Mod. Phys. B

Author:

TAKAHASHI YASUSHI¹,UMEZAWA HIROOMI²

Affiliation:

1. Theoretical Physics Institute, Department of Physics, University of Alberta, Edmonton, Canada

2. Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA

Abstract

A quantum field theory at finite temperature is presented. The temperature dependent vacuum is defined such that the vacuum expectation value agrees with the statistical average. The vacuum states with different temperature are connected by a Bogoliubov transformation. Our formalism allows the use of the Feynman diagrams for the causal Green’s function and the Bethe-Salpeter technique for bound states at finite temperature, The entropy operator is introduced.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217979296000817

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