Thermal form factor approach to the ground-state correlation functions of the XXZ chain in the antiferromagnetic massive regime
Thermal form factor approach to the ground-state correlation functions of the XXZ chain in the antiferromagnetic massive regime
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反铁磁大块区域中 XXZ 链基态相关函数的热形状因子方法
DOI:
10.1088/1751-8113/49/39/394001
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
J. Suzuki
中科院分区:
文献类型:
--
作者:
M. Dugave;F. Göhmann;K. K. Kozlowski;J. Suzuki
We use the form factors of the quantum transfer matrix in the zero-temperature limit in order to study the two-point ground-state correlation functions of the XXZ chain in the antiferromagnetic massive regime. We obtain novel form factor series representations of the correlation functions which differ from those derived either from the q-vertex-operator approach or from the algebraic Bethe Ansatz approach to the usual transfer matrix. We advocate that our novel representations are numerically more efficient and allow for a straightforward calculation of the large-distance asymptotic behaviour of the two-point functions. Keeping control over the temperature corrections to the two-point functions we see that these are of order
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期刊:
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