Abstract
We consider a chain of N harmonic oscillators perturbed by a conservative stochastic dynamics and coupled at the boundaries to two gaussian thermostats at different temperatures. The stochastic perturbation is given by a diffusion process that exchange momentum between nearest neighbor oscillators conserving the total kinetic energy. The resulting total dynamics is a degenerate hypoelliptic diffusion with a smooth stationary state. We prove that the stationary state, in the limit as N→ ∞, satisfies Fourier’s law and the linear profile for the energy average
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Bernardin, C., Olla, S. Fourier’s Law for a Microscopic Model of Heat Conduction. J Stat Phys 121, 271–289 (2005). https://doi.org/10.1007/s10955-005-7578-9
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DOI: https://doi.org/10.1007/s10955-005-7578-9