Thermodynamics and quantum field theory

I. Hardman, H. Umezawa, Yoshiya Yamanaka

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We describe the thermal change of a quantum field system using thermo field dynamics, an operator quantum theory. With this it is straightforward to discuss the change in thermal energy which we relate to thermodynamics. The fundamental concept is that it is necessary to recognize two sources of time dependence, one for the Heisenberg operators and one for the Heisenberg states; this is a radical departure from conventional quantum field theory and one that should find many applications.

Original languageEnglish
Pages (from-to)293-298
Number of pages6
JournalPhysics Letters A
Volume146
Issue number6
DOIs
Publication statusPublished - 1990 Jun 4
Externally publishedYes

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operators
thermodynamics
thermal energy
quantum theory
time dependence

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Thermodynamics and quantum field theory. / Hardman, I.; Umezawa, H.; Yamanaka, Yoshiya.

In: Physics Letters A, Vol. 146, No. 6, 04.06.1990, p. 293-298.

Research output: Contribution to journalArticle

Hardman, I. ; Umezawa, H. ; Yamanaka, Yoshiya. / Thermodynamics and quantum field theory. In: Physics Letters A. 1990 ; Vol. 146, No. 6. pp. 293-298.
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