Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dimer Correlarions in Spin-1/2 Alternating XY Chain   We investigate the long-distance asymptotic behavior of the dimer
correlations in the spin-1/2 alternating $XY$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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The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn