Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Long-term behaviour of Hertzian chains between fixed walls is really
  equilibrium   We examine the long-term behaviour of non-integrable, energy-conserved, 1D
systems of macroscopic grains interacting via a contact-only generalized Hertz
potential and held between stationary walls. Existing dynamical studies showed
the absence of energy equipartitioning in such systems, hence their long-term
dynamics was described as quasi-equilibrium. Here we show that these systems do
in fact reach thermal equilibrium at sufficiently long times, as indicated by
the calculated heat capacity. This phase is described by equilibrium
statistical mechanics, opening up the possibility that the machinery of
non-equilibrium statistical mechanics may be used to understand the behaviour
of these systems away from equilibrium.

28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg