Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological phases and fractional excitations of the exciton condensate
  in a special class of bilayer systems   We study the exciton condensate in zero temperature limit in a special class
of electron-hole bilayer systems adjacent to insulating ferromagnetic films.
With the self-consistent mean-field approximation, we find that the Rashba
spin-orbit interaction in the electron and hole layers can induce the p \pm ip
or p pairing states depending on the different magnetization of the overlapped
ferromagnetic films. Correspondingly, the topologically nontrivial or trivial
phases emerge. Furthermore, in the topologically nontrivial phase, the
quasiparticle excitations of the U(1) vortex are attached to fractional quantum
numbers and obey Abelian statistics.

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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
2
The categories of this paper are: math
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys