Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Equilibrium-like behavior in far-from-equilibrium chemical reaction
  networks   In an equilibrium chemical reaction mixture, the number of molecules present
obeys a Poisson distribution. We ask when the same is true of the steady state
of a nonequilibrium reaction network and obtain an essentially complete answer.
In particular, we show that networks with certain topological features must
have a Poisson distribution, whatever the reaction rates. Such driven systems
also obey an analog of the fluctuation-dissipation theorem. Our results may be
relevant to biological systems and to the larger question of how equilibrium
concepts might apply to nonequilibrium systems.

3
The categories of this paper are: physics
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat