Self-consistent renormalisation in thermofield dynamics

H. Umezawa, Yoshiya Yamanaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

From the consideration of quasiparticles in thermal situations, the authors derive a universal expression of the self-consistent renormalisation condition in thermofield dynamics. This condition is valid even when the renormalised energy becomes time dependent, and provides us with four independent self-consistent equations for four real parameters, i.e. renormalised energy, dissipative coefficient, number density and a new degree of freedom chi , which is a phase in thermal doublet space.

Original languageEnglish
Article number039
Pages (from-to)2461-2473
Number of pages13
JournalJournal of Physics A: General Physics
Volume22
Issue number13
DOIs
Publication statusPublished - 1989
Externally publishedYes

Fingerprint

Renormalization
Quasiparticles
Energy
degrees of freedom
Degree of freedom
Valid
energy
Coefficient
coefficients
Hot Temperature

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Physics and Astronomy(all)
  • Mathematical Physics

Cite this

Self-consistent renormalisation in thermofield dynamics. / Umezawa, H.; Yamanaka, Yoshiya.

In: Journal of Physics A: General Physics, Vol. 22, No. 13, 039, 1989, p. 2461-2473.

Research output: Contribution to journalArticle

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