Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective temperature in nonequilibrium steady states of Langevin
  systems with a tilted periodic potential   We theoretically study Langevin systems with a tilted periodic potential. It
has been known that the ratio $\Theta$ of the diffusion constant to the
differential mobility is not equal to the temperature of the environment
(multiplied by the Boltzmann constant), except in the linear response regime,
where the fluctuation dissipation theorem holds. In order to elucidate the
physical meaning of $\Theta$ far from equilibrium, we analyze a modulated
system with a slowly varying potential. We derive a large scale description of
the probability density for the modulated system by use of a perturbation
method. The expressions we obtain show that $\Theta$ plays the role of the
temperature in the large scale description of the system and that $\Theta$ can
be determined directly in experiments, without measurements of the diffusion
constant and the differential mobility.

12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an