%0 Journal Article
%T Thermal Entanglement of Anisotropic XY Chains in a Transverse Field
%A ZHAI Xiao-Yue
%A TONG Pei-Qing
%A <br>翟孝月
%A 童培庆
%J 中国物理快报
%D 2007
%I 
%X By using the concept of concurrence, we numerically investigate the thermal entanglement between any two nearest-neighbour spins in uniform and periodic anisotropic XY chains in a transverse field at finite temperature T. It is found that the entanglement has more than one critical temperatures on some parameter regions for uniform and periodic chains. We also discuss the behaviour of the thermal entanglement at the vicinity of quantum phase transition of periodic anisotropic XY chains and find that a11 the derivatives aλC have similar behaviour as that of the uniform chain.
%K 03
%K 67
%K -a
%K 03
%K 65
%K Ud
%K 05
%K 50
%K +q
%K 75
%K 10
%K Jm<br>热缠结
%K 各向异性
%K 横梁领域
%K 物理学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=03664AC44D4808184BDEA1177EBD74AF&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=9CF7A0430CBB2DFD&sid=1FE3C1A20D3620BE&eid=2768654D5F8E2AA3&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0