Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "$Z_{2}$ spin liquid phase on the kagome lattice: a new
  saddle point", by Tao Li [arXiv:1601.02165 (2016)]   In a recent paper [arXiv:1601.02165], Tao Li claimed that a gapped
$\mathbb{Z}_2$ spin liquid, obtained using projected Gutzwiller fermionic wave
functions, can be stabilized in the Heisenberg model on the kagome lattice. We
perform very accurate variational calculations and confirm with unprecedented
accuracy the fact, that the $\mathbb{Z}_{2}$ spin liquid is a local energy
minimum that goes away with system size, thus reaffirming the scenario of a
gapless $U(1)$ Dirac spin liquid ground state.

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The categories of this paper are: chem-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: supr-con