Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Aspects of Confinement in Low Dimensions   We briefly review some examples of confinement which arise in condensed
matter physics. We focus on two instructive cases: the off-critical Ising model
in a magnetic field, and an array of weakly coupled (extended) Hubbard chains
in the Wigner crystal phase. In the appropriate regime, the elementary
excitations in these 1+1 and quasi-one-dimensional systems are confined into
`mesons'. Although the models are generically non-integrable, quantum mechanics
and form factor techniques yield valuable information.

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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: supr-con
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol