Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Symmetry Breaking and Enhanced Condensate Fraction in a Matter-Wave
  Bright Soliton   An exact diagonalization study reveals that a matter-wave bright soliton and
the Goldstone mode are simultaneously created in a quasi-one-dimensional
attractive Bose-Einstein condensate by superpositions of quasi-degenerate
low-lying many-body states. Upon formation of the soliton the maximum
eigenvalue of the single-particle density matrix increases dramatically,
indicating that a fragmented condensate converts into a single condensate as a
consequence of the breaking of translation symmetry.

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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg