Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Localization in the Paul Trap   We show that quantum localization occurs in the center-of-mass motion of an
ion stored in a Paul trap and interacting with a standing laser field. The
present experimental state of the art makes the observation of this phenomenon
feasible.

7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an