Transition rates via Bethe ansatz for the spin-1/2 planar XXZ antiferromagnet

Details 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

2003-03-08

arxiv.org/abs/cond-mat/0303147v1

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 2 figures

Scientific paper

10.1088/0305-4470/36/20/301

A novel determinantal representation for matrix elements of local spin operators between Bethe wave functions 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.

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