Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Orbital angular momentum interference of trapped matter waves   We introduce a matter wave interference scheme based on the quantization of
orbital angular momentum in a ring trap. It operates without beam splitters, is
sensitive to geometric phases induced by external gauge fields, and allows
measuring interatomic scattering lengths. We argue that orbital angular
momentum interferometry offers a versatile platform for quantum coherent
experiments with cold atoms and Bose-Einstein condensates using
state-of-the-art technology.

11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
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The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th