Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum phases of bosons in double-well optical lattices   We study the superfluid to Mott insulator transition of bosons in a
two-legged ladder optical lattice, of a type accessible in current experiments
on double-well optical lattices. The zero-temperature phase diagram is mapped
out, with a focus on its dependence upon interchain hopping and the tilt
between double wells. We find that the unit-filling Mott phase exhibits a
non-monotonic behavior as a function of the tilt parameter, producing a
reentrant phase transition between Mott insulator and superfluid phases.

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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: physics
5
The categories of this paper are: gr-qc
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The categories of this paper are: nlin
18
The categories of this paper are: econ