Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A work fluctuation theorem for a Brownian particle in a non confining
  potentia   Using the Feynman-Kac formula, a work fluctuation theorem for a Brownian
particle in a nonconfining potential, e.g., a potential well with finite depth,
is derived. The theorem yields aninequality that puts a lower bound on the
average work needed to change the potential in time.In comparison to the
Jarzynski equality, which holds for confining potentials, an additional
termdescribing a form of energy related to the never ending diffusive expansion
appears.

16
The categories of this paper are: stat
18
The categories of this paper are: econ
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an