Thermo fields from Euclidean path integrals

R. Laflamme

Physica A: Statistical Mechanics and its Applications, 1989, vol. 158, issue 1, 58-63

Abstract: The motive for the introduction of a fictitious field and the vacuum in thermo field dynamics is derived from Euclidean path integrals. We show that the occurrence of a fictitious system, both in the theory of Umezawa and Takahashi at finite temperature and the one of Israel for black hole backgrounds, can be related to the geometry of the Euclidean section of their spacetime.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:158:y:1989:i:1:p:58-63

DOI: 10.1016/0378-4371(89)90507-4

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