Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 1-D Mott insulator transition of a Bose-Einstein condensate   The superfluid to one-dimensional Mott-insulator transition of a 87Rb
Bose-Einstein condensate is demonstrated. In the experiment, we apply a
one-dimensional optical lattice, formed by two laser beams with a wavelength of
852 nm, to a three dimensional BEC in a shallow trap. We use Kapitza-Dirac
scattering to determine the depth of the optical lattice without knowledge of
its exact geometry. We further study the dynamics of the transition as well as
steady-state phase behavior specific to the one-dimensional case.

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The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci