%0 Journal Article
%T Study of the XY chain with long-range interactions<br>具有长程相互作用S-1/2 XY链的研究
%A Li Jia-Liang
%A Lei Shu-Guo
%A <br>李嘉亮
%A 类淑国
%J 物理学报
%D 2008
%I 
%X Using the mean-field Jordan-Wigner transformation analysis, we have studied the one-dimensional spin-1/2 XY chain with Z-directional uniform long-range interactions in the external magnetic field. We have obtained such results as the Helmholtz free energy, internal energy, specific heat, magnetization and isothermal susceptibility. We also discuss the first and second-order phase transitions of the system at a finite temperature. Our results agree with results published in literature.
%K XY chain
%K mean-field Jordan-Wigner transformation
%K long-range interactions<br>XY链，
%K 平均场Jordan-Wigner变换，
%K 长程相互作用
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=919313080DFD9175A4CD34ED7242FF4A&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=9CF7A0430CBB2DFD&sid=332CF070AEDA0CDD&eid=E78678B5405262E2&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0