Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pre-yield non-affine fluctuations and a hidden critical point in
  strained crystals   A crystalline solid exhibits thermally induced localised {\em non-affine}
droplets in the absence of external stress. Here we show that upon an imposed
shear, the size of these droplets grow until they percolate at a critical
strain, well {\em below} the value at which the solid begins to yield. This
critical point does not manifest in bulk thermodynamic or mechanical
properties, but is {\em hidden} and reveals itself in the onset of
inhomogeneities in elastic moduli, marked changes in the appearance and local
properties of non-affine droplets and a sudden enhancement in defect pair
concentration. Slow relaxation of stress and an-elasticity appear as observable
dynamical consequences of this hidden criticality. Our results may be directly
verified in colloidal crystals with video microscopy techniques but are
expected to have more general validity.

6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an