Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymptotics of quasi-classical localized states in 2D system of charged
  hard-core bosons   The continuous quasi-classical two-sublattice approximation is constructed
for the 2D system of charged hard-core bosons to explore metastable
inhomogeneous states analogous to inhomogeneous localized excitations in
magnetic systems. The types of localized excitations are determined by
asymptotic analysis and compared with numerical results. Depending on the
homogeneous ground state, the excitations are the ferro and antiferro type
vortices, the skyrmion-like topological excitations or linear domain walls.

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The categories of this paper are: hep-th
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The categories of this paper are: econ
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas