Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Development of instability of dark solitons generated by a flow of
  Bose-Einstein condensate past a concave corner   The stability of dark solitons generated by a supersonic flow of a
Bose-Einstein condensate past a concave corner (or a wedge) is studied. It is
shown that solitons in the dispersive shock wave generated at the initial
moment of time demonstrate a snake instability during their evolution to
stationary curved solitons. Time of decay of soliton to vortices agrees very
well with analytical estimates of the instability growth rate.

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The categories of this paper are: math-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
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
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The categories of this paper are: stat
2
The categories of this paper are: math
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph