Eigenfunctions of Five-Qubit XX Chain and Ground State Concurrence  

作　　者：LING Yin-Sheng 

机构地区：[1]School of Physical Science and Technology, Suzhou University, Suzhou 215006, China

出　　处：《Communications in Theoretical Physics》2008年第12期1295-1298,共4页理论物理通讯（英文版）

摘　　要：Use Jordan-Wigner transformation the eigenstates and eigenenergies of live qubits XX chain including external magnetic field are obtained. The concurrences Co,1 and Co,2 of ground state are obtained. For the ferromagnetic, when [（√5 - 1）/2]｜J｜ 〈 B ≤ ｜J｜, the values of C0,1 and C0,2 are the same. The C0,2 is easily broken by temperature.

关 键 词：XX chain ENTANGLEMENT Jordan-Wigner transformation CONCURRENCE 

分 类 号：O413[理学—理论物理]