Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Revealing Superfluid--Mott-Insulator Transition in an Optical Lattice   We study (by an exact numerical scheme) the single-particle density matrix of
$\sim 10^3$ ultracold atoms in an optical lattice with a parabolic confining
potential. Our simulation is directly relevant to the interpretation and
further development of the recent pioneering experiment by Greiner et al. In
particular, we show that restructuring of the spatial distribution of the
superfluid component when a domain of Mott-insulator phase appears in the
system, results in a fine structure of the particle momentum distribution. This
feature may be used to locate the point of the superfluid--Mott-insulator
transition.

28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph