# Geometrically protected reversibility in hydrodynamic Loschmidt-echo experiments.

@article{Jeanneret2013GeometricallyPR, title={Geometrically protected reversibility in hydrodynamic Loschmidt-echo experiments.}, author={Rapha{\"e}l Jeanneret and Denis Bartolo}, journal={Nature communications}, year={2013}, volume={5}, pages={ 3474 } }

When periodically driven, a number of markedly different systems (colloids, droplets, grains, flux lines) have revealed a transition from a reversible to an irreversible dynamics that hardly depends on the very nature of the interacting objects. Yet, no clear structural signature has been found for this collective self-organization. Here, we demonstrate an archetypal Loschmidt-echo experiment involving thousands of droplets that interact in a reversible fashion via a viscous fluid. First, we…

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