中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2544-2548.doi: 10.1088/1009-1963/16/9/008

• GENERAL • 上一篇    下一篇

Density matrix of two interacting particles with kinetic coupling derived in bipartite entangled state representation

郭琴   

  1. Department of Physics, Shanghai Jiaotong University, Shanghai 200030, China;Department of Physics, Jiangxi Normal University, Nanchang 330022, China
  • 收稿日期:2007-01-27 修回日期:2007-02-25 出版日期:2007-09-20 发布日期:2007-09-20
  • 基金资助:
    Project supported by the Specialized Research Fund for the Doctorial Progress of Higher Education in China.

Density matrix of two interacting particles with kinetic coupling derived in bipartite entangled state representation

Guo Qin(郭琴)†   

  1. Department of Physics, Shanghai Jiaotong University, Shanghai 200030, China;Department of Physics, Jiangxi Normal University, Nanchang 330022, China
  • Received:2007-01-27 Revised:2007-02-25 Online:2007-09-20 Published:2007-09-20
  • Supported by:
    Project supported by the Specialized Research Fund for the Doctorial Progress of Higher Education in China.

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摘要： A density matrix is usually obtained by solving the Bloch equation, however only a few Hamiltonians' density matrices can be analytically derived. The density matrix for two interacting particles with kinetic coupling is hard to derive by the usual method due to this coupling; this paper solves this problem by using the bipartite entangled state representation.

Abstract: A density matrix is usually obtained by solving the Bloch equation, however only a few Hamiltonians' density matrices can be analytically derived. The density matrix for two interacting particles with kinetic coupling is hard to derive by the usual method due to this coupling; this paper solves this problem by using the bipartite entangled state representation.

Key words: density matrix, the bipartite entangled state representation, kinetic coupling

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
02.10.Yn (Matrix theory) 03.65.Fd (Algebraic methods) 03.65.Ge (Solutions of wave equations: bound states) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)