Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-dimensional steady transport by molecular dynamics simulation:
  Non-Boltzmann position distribution and non-Arrhenius dynamical behavior   A non-equilibrium steady state can be characterized by a nonzero but
stationary flux driven by a static external force. Under a weak external force,
the drift velocity is difficult to detect because the drift motion is feeble
and submerged in the intense thermal diffusion. In this article, we employ an
accurate method in molecular dynamics simulation to determine the drift
velocity of a particle driven by a weak external force in a one-dimensional
periodic potential. With the calculated drift velocity, we found that the
mobility and diffusion of the particle obey the Einstein relation, whereas
their temperature dependences deviate from the Arrhenius law. A microscopic
hopping mechanism was proposed to explain the non-Arrhenius behavior. Moreover,
the position distribution of the particle in the potential well was found to
deviate from the Boltzmann equation in a non-equilibrium steady state. The
non-Boltzmann behavior may be attributed to the thermostat which introduces and
effective "viscous" drag opposite to the drift direction of the particle.

5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga