Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unified Quantum Mechanical Picture for Confined Spinons in Dimerized and
  Frustrated Spin S=1/2 Chains   A quantum mechanical picture is presented to describe the behavior of
confined spinons in a variety of S=1/2 chains. The confinement is due to
dimerization and frustration and it manifests itselfas a nonlinear potential
V(x)~ |x|^b, centered at chain ends (b <= 1) or produced by modulation kinks (b
> 1). The calculation extends to weak or zero frustration some previous ideas
valid for spinons in strongly frustrated spin chains. The local magnetization
patterns of the confined spinons are calculated. A (minimum) enhancement of the
local moments of about 11/3 over a single S=1/2 is found. Estimates for
excitation energies and binding lengths are obtained.

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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph