Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The superspin approach to a disordered quantum wire in the
  chiral-unitary symmetry class with an arbitrary number of channels   We use a superspin Hamiltonian defined on an infinite-dimensional Fock space
with positive definite scalar product to study localization and delocalization
of noninteracting spinless quasiparticles in quasi-one-dimensional quantum
wires perturbed by weak quenched disorder. Past works using this approach have
considered a single chain. Here, we extend the formalism to treat a
quasi-one-dimensional system: a quantum wire with an arbitrary number of
channels coupled by random hopping amplitudes. The computations are carried out
explicitly for the case of a chiral quasi-one-dimensional wire with broken
time-reversal symmetry (chiral-unitary symmetry class). By treating the space
direction along the chains as imaginary time, the effects of the disorder are
encoded in the time evolution induced by a single site superspin
(non-Hermitian) Hamiltonian. We obtain the density of states near the band
center of an infinitely long quantum wire. Our results agree with those based
on the Dorokhov-Mello-Pereyra-Kumar equation for the chiral-unitary symmetry
class.

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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
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The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess
1
The categories of this paper are: cs
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The categories of this paper are: solv-int
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The categories of this paper are: astro-ph