1992/12/22 by A. R. Its, A. G. Izergin, V. E. Korepin +1 · 1 citation
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1103/physrevlett.70.1704
published as Phys.Rev.Lett. 70 (1993) 1704-1708; Erratum-ibid. 70 (1993) 2357 · 7 pages
arxiv created 1992/12/22 · arxiv updated 2009/11/30
Isotropic XY is considered. It describes interaction of quantum spins on 1-dimesional lattice. Alternatevly one can call the model XXO Hiesenberg antiferromagnet. We solved long standing problem of evaluation of temperature corelations. We proved that correlation function of the model is τ function of Ablowitz-Ladik PDE. We explicitly evaluated asymptotics.