Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of Incompressible States in a Narrow Channel   We report on the properties of a system of interacting electrons in a narrow
channel in the quantum Hall effect regime. It is shown that an increase in the
strength of the Coulomb interaction causes abrupt changes in the width of the
charge-density profile of translationally invariant states. We derive a phase
diagram which includes many of the stable odd-denominator states as well as a
novel fractional quantum Hall state at lowest half-filled Landau level. The
collective mode evaluated at the half-filled case is strikingly similar to that
for an odd-denominator fractional quantum Hall state.

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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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: chao-dyn
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The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
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The categories of this paper are: hep-th
1
The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga