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International Journal of Theoretical Physics

, Volume 47, Issue 11, pp 2952–2959 | Cite as

Time Evolution of Density Operator for Field Damping in Squeezed Bath Calculated by Squeezing Transformation and Entangled State Representation

  • Xu-bing Tang
  • Hong-yi Fan
Article

Abstract

We find that a squeezing transformation can efficiently simplify the density operator equation of field damping in a squeezed bath. Then the entangled state representation is introduced to solve the simplified equation and the time evolution of density operator, which turns out to be a mixed coherent squeezed state.

Keywords

Entangled state representation Squeezing transformation Master equation Thermo field dynamics 

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Department of Material Science and EngineeringUniversity of Science and Technology of ChinaHefeiChina
  2. 2.Department of PhysicsShanghai Jiao Tong UniversityShanghaiChina

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