Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Why Do Granular Materials Stiffen with Shear Rate? A Test of Novel
  Stress-Based Statistics   Recent experiments exhibit a rate-dependence for granular shear such that the
stress grows linearly in the logarithm of the shear rate, \dot{\gamma}.
Assuming a generalized activated process mechanism, we show that these
observations are consistent with a recent proposal for a stress-based
statistical ensemble. By contrast, predictions for rate-dependence using
conventional energy-based statistical mechanics to describe activated
processes, predicts a rate dependence that of (\ln (\dot{\gamma}))^{1/2}.

23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph