Transition Rates via Bethe Ansatz for the Spin-1/2 Planar XXZ Antiferromagnet
Transition Rates via Bethe Ansatz for the Spin-1/2 Planar XXZ Antiferromagnet
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来自 Bethe Ansatz 的 Spin-1/2 平面 XXZ 反铁磁体的跃迁率
DOI:
10.1088/0305-4470/36/20/301
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发表时间:
2003
期刊:
影响因子:
--
通讯作者:
G. Mueller
中科院分区:
文献类型:
--
作者:
Daniel Biegel;M. Karbach;G. Mueller
A novel determinantal representation for matrix elements of local spin operators between Bethe wavefunctions of the one-dimensional s = 1/2 XXZ model is used to calculate transition rates for dynamic spin structure factors in the planar regime. In a first application, high-precision numerical data are presented for lineshapes and band edge singularities of the in-plane (xx) two-spinon dynamic spin structure factor.