Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theta Sectors and Thermodynamics of a Classical Adjoint Gas   The effect of topology on the thermodynamics of a gas of adjoint
representation charges interacting via 1+1 dimensional SU(N) gauge fields is
investigated. We demonstrate explicitly the existence of multiple vacua
parameterized by the discrete superselection variable k=1,...,N. In the low
pressure limit, the k dependence of the adjoint gas equation of state is
calculated and shown to be non-trivial. Conversely, in the limit of high system
pressure, screening by the adjoint charges results in an equation of state
independent of k. Additionally, the relation of this model to adjoint QCD at
finite temperature in two dimensions and the limit of large N are discussed.

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The categories of this paper are: gr-qc
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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: nucl-th
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The categories of this paper are: math
36
The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: physics
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The categories of this paper are: supr-con