In a lattice gas of run-and-tumble particles, the tagged particle keeps a non-Gaussian, roughly Laplace displacement distribution even after many tumbles, unlike the run-and-tumble polymer where long-time motion becomes Gaussian.
Mori, Prog
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Non-Gaussian anomalous dynamics in systems of interacting run-and-tumble particles
In a lattice gas of run-and-tumble particles, the tagged particle keeps a non-Gaussian, roughly Laplace displacement distribution even after many tumbles, unlike the run-and-tumble polymer where long-time motion becomes Gaussian.