%0 Journal Article
%T Quantum thermalization via percolation
%A Christine Khripkov
%A Amichay Vardi
%A Doron Cohen
%J Physics
%D 2014
%I arXiv
%R 10.1088/1367-2630/17/2/023071
%X We highlight a dynamical anomaly in which the rate of relaxation towards thermal equilibrium in a bi-partite quantum system violates the standard linear-response (Kubo) formulation, even when the underlying dynamics is highly chaotic. This anomaly originates from an $\hbar$-dependent sparsity of the underlying quantum network of transitions. Using a minimal bi-partite Bose-Hubbard model as an example, we find that the relaxation rate acquires an anomalous $\hbar$ dependence that reflects percolation-like dynamics in energy space.
%U http://arxiv.org/abs/1406.6872v2