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

Abstract

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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Cite this paper

@inproceedings{Biegel2003TransitionRV, title={Transition rates via Bethe ansatz for the spin-1/2 planar XXZ antiferromagnet}, author={Daniel Biegel and Michael Karbach and Gerhard Mueller}, year={2003} }