Diffusion from deterministic dynamics

Non-equilibrium Dynamics and Random Matrices
Topic:Diffusion from deterministic dynamics
Speaker:Antti Kupiainen
Affiliation:University of Helsinki; Member, School of Mathematics
Date:Thursday, October 24
Time/Room:11:00am - 12:00pm/S-101
Video Link:https://video.ias.edu/nedrm/2013/1024-AnttiKupiainen

I discuss a renormalization group method to derive diffusion from time reversible quantum or classical microscopic dynamics. I start with the problem of return to equilibrium and derivation of Brownian motion for a quantum particle interacting with a field of phonons or photons and then discuss how the method could be extended to classical coupled maps or coupled Hamiltonian systems.