Authors
Citation
Hh. Xu, BOGOLIUBOV MATRICES IN THERMAL FIELD-THEORY, Communications in Theoretical Physics, 26(3), 1996, pp. 289-294
Citations number
22
Categorie Soggetti
Physics
Journal title
ISSN journal
02536102
Volume
26
Issue
3
Year of publication
1996
Pages
289 - 294
Database
ISI
SICI code
0253-6102(1996)26:3<289:BMITF>2.0.ZU;2-O
Abstract
It is found that Bogoliubov matrices introduced in thermo field dynami
cs can be generally derived for an arbitrary value of the time-path pa
rameter sigma, 0 less than or equal to sigma less than or equal to bet
a, by the closed-time path approach in a natural and simple way. Based
on the generalized Bogoliubov matrices the meaning of widely believed
sigma-independence of thermal field theory is discussed.