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Stationary measures of a Randomly Perturbed Circle Map with a Neutral Fixed Point

Program in Applied Mathematics Brown Bag Seminar

Stationary measures of a Randomly Perturbed Circle Map with a Neutral Fixed Point
Series: Program in Applied Mathematics Brown Bag Seminar
Location: MATH 402
Presenter: Ben Stilin, Program in Applied Mathematics, University of Arizona

Abstract:         Experiments in fluid dynamics exhibit spontaneous transitions between laminar and turbulent behavior when the control parameter is near the transition between turbulent and laminar flow. Such behavior was termed "intermittent chaos" by Pomeau and Manneville in 1980.  We study a common model of intermittent chos, a circle map with a neutral fixed point, by developing a method, heavily inspired by the Extended Dynamic Mode Decomposition, to compute an approximation of the spectrum of the associated transfer operator. This gives us access to the system's invariant measures and the stationary measures of the associated randomly perturbed system.

 

Place: Math Building, Room 402  https://map.arizona.edu/89