Thermal degree of freedom in thermo field dynamics

H. Umezawa, Yoshiya Yamanaka

研究成果: Article

14 引用 (Scopus)

抄録

The view of the thermal degree of freedom for the quantum field system, using the language of thermo field dynamics, is elaborated in this paper: the thermal degree of freedom is the degree of freedom to move through degenerate thermal vacua associated with spontaneous breakdown of a certain symmetry (Ĝ-symmetry). Based on this view, we study a quasi-particle picture, in which the Ĝ-transformation becomes the thermal Bogoliubov transformation.

元の言語English
ページ(範囲)75-82
ページ数8
ジャーナルPhysics Letters A
155
発行部数2-3
DOI
出版物ステータスPublished - 1991 5 6
外部発表Yes

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degrees of freedom
elementary excitations
breakdown
symmetry

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

Thermal degree of freedom in thermo field dynamics. / Umezawa, H.; Yamanaka, Yoshiya.

:: Physics Letters A, 巻 155, 番号 2-3, 06.05.1991, p. 75-82.

研究成果: Article

Umezawa, H. ; Yamanaka, Yoshiya. / Thermal degree of freedom in thermo field dynamics. :: Physics Letters A. 1991 ; 巻 155, 番号 2-3. pp. 75-82.
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