William Cooperman

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math.PR2025

Residual Diffusivity for Expanding Bernoulli Maps

William Cooperman, Gautam Iyer, James Nolen

Consider a discrete time Markov process $X^{I^} µ$ on $R^{d}$ that makes a deterministic jump based on its current location, and then takes a small Gaussian step of variance $Îµ^…

math.PR2025

Exponentially mixing flows with slow enhanced dissipation

William Cooperman, Gautam Iyer, Keefer Rowan +1

Consider a passive scalar which is advected by an incompressible flow $u$ and has small molecular diffusivity $I^º$ . Previous results show that if $u$ is exponentially mixing and $C…