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29 March 2024
 
  » arxiv » cond-mat/0103373

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Exact Solution of Heisenberg-liquid models with long-range coupling
Yupeng Wang ; P. Schlottmann ;
Date 19 Mar 2001
Journal Phys. Rev. B 63, 134437 (2001), Mar. 15 issue
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractWe present the exact solution of two Heisenberg-liquid models of particles with arbitrary spin $S$ interacting via a hyperbolic long-range potential. In one model the spin-spin coupling has the simple antiferromagnetic Heisenberg exchange form, while for the other model the interaction is of the ferromagnetic Babujian-Takhatajan type. It is found that the Bethe ansatz equations of these models have a similar structure to that of the Babujian-Takhatajan spin chain. We also conjecture the integrability of a third new spin-lattice model with long-range interaction.
Source arXiv, cond-mat/0103373
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