# Active nonreciprocal attraction between motile particles in an elastic medium.

@article{Gupta2020ActiveNA, title={Active nonreciprocal attraction between motile particles in an elastic medium.}, author={Rahul K Gupta and Raushan Kant and Harsh Soni and A. K. Sood and Sriram Ramaswamy}, journal={Physical review. E}, year={2020}, volume={105 6-1}, pages={ 064602 } }

We show from experiments and simulations on vibration-activated granular matter that self-propelled polar rods in an elastic medium on a substrate turn and move towards each other. We account for this effective attraction through a coarse-grained theory of a motile particle as a moving point-force density that creates elastic strains in the medium that reorient other particles. Our measurements confirm qualitatively the predicted features of the distortions created by the rods, including the |x…

## 11 Citations

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Recently, non-reciprocal systems have become a focus of growing interest. Examples occur in soft and active matter, but also in engineered quantum materials and neural (brain) networks. Here, we…

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