Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nature of quasiparticle excitations in the fractional quantum Hall
  effect   We investigate the 1/3 fractional quantum Hall state with one and two
quasiparticle excitations. It is shown that the quasiparticle excitations are
best described as excited composite fermions occupying higher composite-fermion
quasi-Landau levels. In particular, the composite-fermion wave function for a
single quasiparticle has 15% lower energy than the trial wave function
suggested by Laughlin, and for two quasiparticles, the composite fermion theory
also gives new qualitative structures.

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The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex
2
The categories of this paper are: math
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol