Dimer Correlarions in Spin-1/2 Alternating XY Chain
arXiv:cond-mat/9510114
Abstract
We investigate the long-distance asymptotic behavior of the dimer correlations in the spin-1/2 alternating chain both at T=0 and at sufficiently low-temperatures. The correlations consist of the dimer long-range order part and the exponentially decaying one. Although the dimer long-range order takes the different values depending on the choice of the spin pairs, the behavior in the decaying term is same irrespective of the choice of spin pairs.
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