Thermodynamic limit and twisted boundary energy of the XXZ spin chain with antiperiodic boundary condition

Thermodynamic limit and twisted boundary energy of the XXZ spin chain with antiperiodic boundary condition
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反周期边界条件下XXZ自旋链的热力学极限和扭曲边界能

DOI:
10.1016/j.nuclphysb.2018.10.002
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发表时间:
2018-04
期刊:
影响因子:
2.8
通讯作者:
Yupeng Wang
Yupeng Wang
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhirong Xin;Yi Qiao;Kun Hao;Junpeng Cao;Wen-Li Yang;Kangjie Shi;Yupeng Wang

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研究了反铁磁XXZ自旋链在反周期边界条件下非齐次T-Q关系的热力学极限。结果表明,当系统规模N趋于无穷大时,基态非齐次项的贡献可以忽略,从而使非齐次Bethe方程(BAE)化为齐次BAE方程.然后得到了基态的量子数,利用它可以研究任意大小的系统。我们还计算了系统的扭曲边界能。
We investigate the thermodynamic limit of the inhomogeneous T− Q relation of the antiferromagnetic XXZ spin chain with antiperiodic boundary condition. It is shown that the contribution of the inhomogeneous term for the ground state can be neglected when the system-size N tends to infinity, which enables us to reduce the inhomogeneous Bethe ansatz equations (BAEs) to the homogeneous ones. Then the quantum numbers at the ground states are obtained, by which the system with arbitrary size can be studied. We also calculate the twisted boundary energy of the system.
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