From classical mechanics with doubled degrees of freedom to quantum field theory for nonconservative systems

Y. Kuwahara*, Y. Nakamura, Y. Yamanaka

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

The 2×2-matrix structure of Green's functions is a common feature for the real-time formalisms of quantum field theory under thermal situations, such as the closed time path formalism and Thermo Field Dynamics (TFD). It has been believed to originate from quantum nature. Recently, Galley has proposed the Hamilton's principle with initial data for nonconservative classical systems, doubling each degree of freedom [1]. We show that the Galley's Hamilton formalism can be extended to quantum field and that the resulting theory is naturally identical with nonequilibrium TFD.

本文言語English
ページ(範囲)3102-3105
ページ数4
ジャーナルPhysics Letters, Section A: General, Atomic and Solid State Physics
377
43
DOI
出版ステータスPublished - 2013 12月 9

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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