Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Band insulator to Mott insulator transition in a bilayer Hubbard model   The ground state phase diagram of the half-filled repulsive Hubbard model in
a bilayer is investigated using cluster dynamical mean field theory. For weak
to intermediate values of Coulomb repulsion $U$, the system undergoes a
transition from a Mott insulating phase to a metallic phase and then onto a
band insulating phase as the interlayer hopping is increased. In the strong
coupling case, the model exhibits a direct crossover from a Mott insulating
phase to a band insulating phase. These results are robust with respect to the
presence or absence of magnetic order.

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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
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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: alg-geom
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ph
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The categories of this paper are: solv-int