Diffusion in Energy Conserving Coupled Maps

Bricmont, Jean;Kupiainen, Antti
(2013) Communications in Mathematical Physics —

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  • Bricmont, JeanUCLouvain
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  • Kupiainen, AnttiUniversity of Helsinki
    Author
Abstract
We consider a dynamical system consisting of subsystems indexed by a lattice. Each subsystem has one conserved degree of freedom (``energy") the rest being uniformly hyperbolic. The subsystems are weakly coupled together so that the sum of the subsystem energies remains conserved. We prove that the subsystem energies satisfy the diffusion equation in a suitable scaling limit.
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Bricmont, J., & Kupiainen, A. (2013). Diffusion in Energy Conserving Coupled Maps. Communications in Mathematical Physics. https://doi.org/10.1007/s00220-013-1687-0