二聚化对于一维自旋 1/2的海森堡链的性质的影响(英文)  

The effects of dimerization on the properties of one-dimensional spin-1/2 Heisenberg chain

作　　者：陈新义[1] 仲崇贵[1] 蒋青[1] 

机构地区：[1]苏州大学理学院物理系,江苏苏州215006

出　　处：《苏州大学学报（自然科学版）》2001年第3期48-52,共5页Journal of Soochow University(Natural Science Edition)

基　　金：NaturalScienceFundationoftheEducationDepartmentofJiangsuProvince(JW 970 0 5 8)

摘　　要：Jordan Wigner变换和玻色化技术的基础上对sineGordon方程使用标量场方法和量子自恰近似 ,我们研究了在低温下时二聚化对激发谱中的能隙和比热的影响 .在临界温度Tc 点 。By using the scalar field mechanical approach and quantum self consistent approximation to the sine Gordon equation based on the Jordan Wigner transformation and bosonization techniques,we studied the effect of the dimerization on the excitation energy gap and specific heat at low temperatures.Successive phase transition happened at critical temperature T c.

关 键 词：JORDAN-WIGNER变换 sineGordon方程 二聚化 海森堡链 标量场方法 量子自恰近似 激发谱 

分 类 号：O482.51[理学—固体物理]