Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective temperatures and activated dynamics for a two-dimensional
  air-driven granular system on two approaches to jamming   We present experiments on several distinct effective temperatures in a
granular system at a sequence of increasing packing densities and at a sequence
of decreasing driving rates. This includes single-grain measurements based on
the mechanical energies of both the grains and an embedded oscillator, as well
as a collective measurement based on the Einstein relation between diffusivity
and mobility, which all probe different time scales. Remarkably, all effective
temperatures agree. Furthermore, mobility data along the two trajectories
collapse when plotted vs effective temperature and exhibit an Arrhenius form
with the same energy barrier as the microscopic relaxation time.

31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an