On classical properties of thermal squeezed states

A. Mann*, M. Revzen, H. Umezawa, Y. Yamanaka

*この研究の対応する著者

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The authors use the formalism of thermo field dynamics and the classical Cramer's theorem to show that if two quantum systems are prepared independently and their centre of mass is found to be a thermal squeezed state, then both systems were prepared in thermal squeezed states. This constitutes an alternative derivation of the quantum version of Cramer's theorem. Further, they consider the case of two systems that are prepared independently and their centre of mass is in a pure state in the expanded space of thermo field dynamics. In this case it is shown that the system is also separable in the centre of mass and relative coordinates, and again all the states involved are thermal squeezed states.

本文言語English
論文番号016
ページ(範囲)4527-4533
ページ数7
ジャーナルJournal of Physics A: Mathematical and General
24
19
DOI
出版ステータスPublished - 1991
外部発表はい

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 数理物理学
  • 物理学および天文学(全般)

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