Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-Liquid State for Two-Dimensional Heisenberg Antiferromagnets on a
  Triangular Lattice   The spin liquid state of the antiferromagnetic Heisenberg model on a
triangular lattice is studied within the self-consistent Green's function
method. It is shown that the spin excitation spectra is gapless, and
ground-state energy per site is $E_{g}/NJ=-0.966$, which is in very good
agreement with the results obtained within the variational Monte Carlo method
based on the resonating-valence-bond state. Some thermodynamic properties are
also discussed.

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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th