Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mott Physics and Topological Phase Transition in Correlated Dirac
  Fermions   We investigate the interplay between the strong correlation and the
spin-orbital coupling in the Kane-Mele-Hubbard model and obtain the qualitative
phase diagram via the variational cluster approach. We identify, through an
increase of the Hubbard $U$, the transition from the topological band insulator
to either the spin liquid phase or the easy-plane antiferromagnetic insulating
phase, depending on the strength of the spin-orbit coupling. A nontrivial
evolution of the bulk bands in the topological quantum phase transition is also
demonstrated.

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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: supr-con