Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Aharonov-Bohm effect on the Poincar\'e disk   We consider formal quantum hamiltonian of a charged particle on the
Poincar\'e disk in the presence of an Aharonov-Bohm magnetic vortex and a
uniform magnetic field. It is shown that this hamiltonian admits a
four-parameter family of self-adjoint extensions. Its resolvent and the density
of states are calculated for natural values of the extension parameters.

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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga