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We unveil the existence of non-affinely rearranging regions in the inherentstructures (IS) of supercooled liquids by numerical simulations of two- andthree-dimensional model glass formers subject to static shear deformationscombined with local energy minimizations. In the liquid state IS, we find abroad distribution of rather large rearrangements which are correlated onlyover small distances. At low temperatures, the onset of the cooperativedynamics corresponds to much smaller displacements correlated over largerdistances. This finding indicates the presence of non-affinely rearrangingdomains of relevant size in the IS deformation, which can be seen as the staticcounterpart of the cooperatively rearranging regions in the dynamics. This ideaprovides new insight into possible structural signatures of slow cooperativedynamics of supercooled liquids and supports the connections with elasticheterogeneities found in amorphous solids.

Non-affine deformations of inherent structure as signature of cooperativity in supercooled liquids