Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Validity condition of the Jarzynski relation for a classical mechanical
  system   Recently, Jarzynski suggested a striking thermodynamic equation that relates
free energy change of a system and work done on the system during arbitrary
nonequilibrium processes, which has been believed to hold irrespective of
detailed nature of the nonequilibrium process. However, we show here that the
Jarzynski equation does not hold for an adiabatic process unless the
phase-space extension of the system on completion of the adiabatic process
coincides with that of the final equilibrium state of the system. This
condition can be satisfied only when the adiabatic process does not change
parameters on which the equilibrium phase-space extension of our system is
dependent.

36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ