Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The central role of thermal collective strain in the relaxation of
  structure in a supercooled liquid   The spatial distribution of structural relaxation in a supercooled liquid is
studied using molecular dynamics simulations of a 2D binary mixture. It is
shown that the spatial heterogeneity of the relaxation along with the time
scale of the relaxation is determined, not by the frequency with which
particles move a distance pi/2kBragg, but by the frequency with which particles
can achieve persistent displacements. We show that these persistent
displacements are achieved through the coupled action of local reorganizations
and unrecoverable thermal strains.

9
The categories of this paper are: nlin
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph