Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Matter wave interference of dilute Bose gases in the critical regime   Ultra-cold atomic gases provide new chance to study the universal critical
behavior of phase transition. We study theoretically the matter wave
interference for ultra-cold Bose gases in the critical regime. We demonstrate
that the interference in the momentum distribution can be used to extract the
correlation in the Bose gas. A simple relation between the interference
visibility and the correlation length is found and used to interpret the
pioneering experiment about the critical behavior of dilute Bose gases [Science
{\bf 315}, 1556 (2007)]. Our theory paves the way to experimentally study
various types of ultra-cold atomic gases with the means of matter wave
interference.

37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an