Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Spinning Particle in a Mobius Strip   We develop the classical and quantum theory of a spinning particle moving in
a Mobius strip. We first propose a Lagrangian for such a system and then we
proceed to quantize the system via the constraint Hamiltonian system formalism.
Our results may be of particular interest in several physical scenarios,
including solid state physics and optics. In fact, the present work may shed
some new light on the recent discoveries on condensed matter concerning
topological insulators.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
1
The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: eess