Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Persistent energy flow for a stochastic wave equation model in
  nonequilibrium statistical mechanics   We consider a one-dimensional partial differential equation system modeling
heat flow around a ring. The system includes a Klein-Gordon wave equation for a
field satisfying spatial periodic boundary conditions, as well as
Ornstein-Uhlenbeck stochastic differential equations with finite rank
dissipation and stochastic driving terms modeling heat baths.
  There is an energy flow around the ring. In the case of a linear field with
different (fixed) bath temperatures, the energy flow can persist even when the
interaction with the baths is turned off. A simple example is given.

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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: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci