Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superfluid-insulator transitions of the Fermi gas with near-unitary
  interactions in a periodic potential   We consider spin-1/2 fermions of mass m with interactions near the unitary
limit. In an applied periodic potential of amplitude V and period a, and with a
density of an even integer number of fermions per unit cell, there is a
second-order quantum phase transition between superfluid and insulating ground
states at a critical V=Vc. We compute the universal ratio Vc m a^2 / h^2 at
N=infinity in a model with Sp(2N) spin symmetry. The insulator interpolates
between a band insulator of fermions and a Mott insulator of fermion pairs. We
discuss implications for recent experiments.

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The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc