Random Perturbations of 2-dimensional Hamiltonian Flows

Details Random Perturbations of 2-dimensional Hamiltonian Flows Random Perturbations of 2-dimensional Hamiltonian Flows

2009-03-03

arxiv.org/abs/0903.0436v1

Probability Theory and Related Fields, 129, pp 37-62, 2004

Mathematics

Probability

Scientific paper

We consider the motion of a particle in a periodic two dimensional flow perturbed by small (molecular) diffusion. The flow is generated by a divergence free zero mean vector field. The long time behavior corresponds to the behavior of the homogenized process - that is diffusion process with the constant diffusion matrix (effective diffusivity). We obtain the asymptotics of the effective diffusivity when the molecular diffusion tends to zero.

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