University of Minnesota
School of Physics & Astronomy
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Alex Kamenev

“Noise-Induced Stabilization in Population Dynamics”
M. Parker, A. Kamenev, and B. Meerson, Phys. Rev. Lett. 107, 180603 (2011)

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We investigate a model in which strong noise in a subpopulation creates a metastable state in an otherwise unstable two-population system. The induced metastable state is vortexlike, and its persistence time grows exponentially with the noise strength. A variety of distinct scaling relations are observed depending on the relative strength of the subpopulation noises.