In model amorphous solids produced via differing quench protocols, a
strong correlation is established between local yield stress measured by
direct local probing of shear stress thresholds and the plastic
rearrangements observed during remote loading in shear. This purely local
measure
shows a higher predictive power for identifying sites of plastic activity
when compared with more conventional structural properties. Most
importantly, the sites of low local yield stress thus defined
are shown to be persistent, remaining predictive of deformation events
even after fifty or more such plastic rearrangements. This direct and
non-perturbative approach gives access to relevant transition pathways
that control the stability of amorphous solids. Our results reinforce the
relevance of modeling plasticity in amorphous solids based on a gradually
evolving population of discrete and local zones pre-existing in the
structure.
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