Field theory at finite temperature and \(\eta -\xi\) spacetime
type: Item
instance of: scholarly article
title: Field theory at finite temperature and \(\eta -\xi\) spacetime
zbMATH Open document ID: 0792.53077
published in: Science in China. Series A
publication date: 1993-12-20T00:00:00Z
review text: The author investigates some properties of field theory at finite temperature formulated in terms of an auxiliary complex space introduced by him [Phys. Rev. D 42, 1988 (1990)], the \(\eta-\xi\) spacetime. This space provides a universal geometrical background for finite temperature field theories. The main motivation for the use of \(\eta-\xi\) spacetime is to carry over the Hawking black-hole radiation theory to thermal field theory in Minkowski space. It is shown that thermo field dynamics correspond to the Hamiltonian formalism of the field theory in \(\eta-\xi\) spacetime. It is proven that the vacuum Green functions on Euclidean sections in \(\eta-\xi\) spacetime are equal to the imaginary-time thermal Green functions in flat spacetime.
Mathematics Subject Classification ID: 53Z05
Mathematics Subject Classification ID: 83C57
Mathematics Subject Classification ID: 81T99
zbMATH DE Number: 436752
zbMATH Keywords: finite temperature field theories
zbMATH Keywords: imaginary-time thermal Green functions
author: Yuan Xing Gui
reviewed by: Leszek M. Sokołowski
MaRDI profile type: Publication
description: scientific article; zbMATH DE number 436752