One‐Loop Calculation in Time‐Dependent Non‐Equilibrium Thermo Field Dynamics

H. Umezawa, Yoshiya Yamanaka

研究成果: Article

2 引用 (Scopus)

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This paper is a review on the structure of thermo field dynamics (TFD) in which the basic concepts such as the thermal doublets, the quasi‐particles and the self‐consistent renormalization are presented in detail. A strong emphasis is put on the computational scheme. A detailed structure of this scheme is illustrated by the one‐loop calculation in a non‐equilibrium time‐dependent process. A detailed account of the one‐loop calculation has never been reported anywhere. The role of the self‐consistent renormalization is explained. The equilibrium TFD is obtained as the long‐time limit of non‐equilibrium TFD.

元の言語English
ページ(範囲)819-837
ページ数19
ジャーナルFortschritte der Physik
37
発行部数11
DOI
出版物ステータスPublished - 1989
外部発表Yes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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