Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement of spin-1/2 Heisenberg Antiferromagnetic quantum spin
  chains   The quantum entanglement measure is determined, for the first time, for a
collection of spin-1/2 arranged in a infinite chain with finite temperature and
applied to a single-crystal \beta-\mathrm{T_eVO_4}. The physical quantity
proposed here to measure the entanglement is the distance between states by
adopting the Hilbert-Schmidt norm. We relate the distance between states with
the magnetic susceptibility. The decoherence temperature, above which the
entanglement is suppressed, is determined for a system. A correlation among
their decoherence temperatures and their respective exchange coupling constants
is established, moreover, it is conjectured that the exchange coupling protects
the system from decoherence as temperature increases.

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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc