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

• 来源期刊: 中国物理（英文版）
• 关键词: density matrix the bipartite entangled state representation kinetic coupling
• 年，卷（期）: 2007,（9）
• 页码范围: 2544-2548
• 页数: 5页
• 语种: 英文

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.