Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hitting times of rare events in boundary driven symmetric simple
  exclusion processes   In the boundary driven symmetric simple exclusion process consider an open
set $\ms O$ of density profiles which does not contain the stationary density
profile. We prove that the first time the empirical measure visits the set $\ms
O$ converges to an exponential distribution.

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The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin