Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fractional quantum Hall effect in a U(1)xSU(2) gauge field   We consider the bosonic fractional quantum Hall effect in the presence of a
non-Abelian gauge field in addition to the usual Abelian magnetic field. The
non-Abelian field breaks the twofold internal state degeneracy, but preserves
the Landau level degeneracy. Using exact diagonalization, we find that for
moderate non-Abelian field strengths the system's behaviour resembles a single
internal state quantum Hall system, while for stronger fields there is a phase
transition to either two internal state behaviour or the complete absence of
fractional quantum Hall plateaus. Usually the energy gap is reduced by the
presence of a non-Abelian field, but some non-Abelian fields appear to slightly
increase the gap of the $\nu=1$ and $\nu=3/2$ Read-Rezayi states.

36
The categories of this paper are: cmp-lg
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The categories of this paper are: eess
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph