Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stress-dependent normal mode frequencies from the effective mass of
  granular matter   A zero-temperature critical point has been invoked to control the anomalous
behavior of granular matter as it approaches jamming or mechanical arrest.
Criticality manifests itself in an anomalous spectrum of low-frequency normal
modes and scaling behavior near the jamming transition. The critical point may
explain the peculiar mechanical properties of dissimilar systems such as
glasses and granular materials. Here, we study the critical scenario via an
experimental measurement of the normal modes frequencies of granular matter
under stress from a pole decomposition analysis of the effective mass. We
extract a complex-valued characteristic frequency which displays scaling
$|\omega^*(\sigma)|\sim\sigma^{\Omega'}$ with vanishing stress $\sigma$ for a
variety of granular systems. The critical exponent is smaller than that
predicted by mean-field theory opening new challenges to explain the exponent
for frictional and dissipative granular matter. Our results shed light on the
anomalous behavior of stress-dependent acoustics and attenuation in granular
materials near the jamming transition.

32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th