Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamic scaling in stick-slip friction   We introduce a generalized homogeneous function to describe the joint
probability density for magnitude and duration of events in self-organized
critical systems (SOC). It follows that the cumulative distributions of
magnitude and of duration are power-laws with exponents $\alpha$ and $\tau$
respectively. A power-law relates duration and magnitude (exponent $\gamma$) on
the average. The exponents satisfy the dynamic scaling relation
$\alpha=\gamma\tau$. The exponents classify SOC systems into universality
classes that do not depend on microscopic details provided that both $\alpha<1$
and $\tau<1$. We also present new experimental results on the stick-slip motion
of a sandpaper slowly pulled across a carpet that are consistent with our
criteria for SOC systems. Our experiments, as well as experiments by others,
satisfy our dynamic scaling relation. We discuss the relevance of our results
to earthquake statistics.

11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th