## Energy Diffusion in Harmonic System with Conservative Noise    [PDF]

Giada Basile, Stefano Olla
We prove diffusive behaviour of the energy fluctuations in a system of harmonic oscillators with a stochastic perturbation of the dynamics that conserves energy and momentum. The results concern pinned systems or lattice dimension \$d\ge 3\$, where the thermal diffusivity is finite.
View original: http://arxiv.org/abs/1307.0094