Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dissipative solitons and vortices in polariton superfluids   We examine spatial localisation and dynamical stability of Bose-Einstein
condensates of exciton-polaritons in microcavities under the condition of
off-resonant spatially inhomogeneous optical pumping both with and without a
harmonic trapping potential. We employ the open-dissipative Gross-Pitaevskii
model for describing an incoherently pumped polariton condensate coupled to an
exciton reservoir, and reveal that spatial localisation of the steady-state
condensate occurs due to the effective self-trapping created by the polariton
flows supported by the spatially inhomogeneous pump, regardless of the presence
of the external potential. A ground state of the polariton condensate with
repulsive interactions between the quasiparticles represents a dynamically
stable bright dissipative soliton. We also investigate the conditions for
sustaining spatially localised structures with non-zero angular momentum in the
form of single-charge vortices.

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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: math
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The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: cs