Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First-order superfluid-Mott insulator transition of spinor bosons in an
  optical lattice   We study the superfluid-Mott insulator transition of antiferromagnetic spin-1
bosons in an optical lattice described by a Bose-Hubbard model. Our variational
study with the Gutzwiller-type trial wave function determines that the
superfluid-Mott insulator transition is a first-order one at a part of the
phase boundary curve, contrary to the spinless case. This first-order
transition may be observed through an experiment, such as a Stern-Gerlach type,
under a magnetic field.

26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th