,Thermal entanglement in a two-qubit Heisenberg XY chain with the Dzyaloshinskii-Moriya interaction

• 作 者: Qin Meng Xu Sheng-Long Tao Ying-Juan Tian Dong-Ping
• 机 构: School of Science, Xi’an Jiaotong University, Xi’an 710049, China“,”College of Physics and Informati
• 出 处: 中国物理B(英文版)
• 发表日期: 2008年8期
• 关键词: thermal entanglement Heisenberg XY chain Dzyaloshinskii-Moriya interaction

This paper investigates thermal entanglements of a two-qubit Heisenberg XY chain in the presence of the Dzyaioshinskii-Moriya anisotropic antisymmetric interaction. By the concept of concurrence, it is found that the effects of spin-orbit coupling on the entanglement are different from those of spin-spin model. The analytical expressions of concurrence are obtained for this model.