Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Disappearance of Schwinger's string at the charge - monopole "molecule"   An equivalence of total momentum operator of charge - monopole system to the
momentum operator of a symmetrical quantum top is observed. This explicitly
shows the string independence of Dirac's quantization condition leading to
disappearance of Schwinger's string and reveals some properties of diatomic
molecule for this system.

11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph