Anomalous Heat Diffusion

Sha Liu, Peter Hänggi, Nianbei Li +2

Consider anomalous energy spread in solid phases, i.e., $MSD=\int (x-{⟨x⟩}_E{)}^2{\rho }_E(x,t)dx\propto t^{\beta }$, as induced by a small initial excess energy perturbation di…