title: Dynamical thermalization of disordered nonlinear lattices.
abstract: We study numerically how the energy spreads over a finite disordered nonlinear one-dimensional lattice, where all linear modes are exponentially localized by disorder. We establish emergence of dynamical thermalization characterized as an ergodic chaotic dynamical state with a Gibbs distribution over the modes. Our results show that the fraction of thermalizing modes is finite and grows with the nonlinearity strength.
authors.affiliation: Department of Physics and Astronomy, Potsdam University, Karl-Liebknecht-Strasse 24, D-14476 Potsdam-Golm, Germany.
authors.forename: Mario
authors.initials: M
authors.lastname: Mulansky
authors.forename: Karsten
authors.initials: K
authors.lastname: Ahnert
authors.forename: Arkady
authors.initials: A
authors.lastname: Pikovsky
authors.forename: Dima L
authors.initials: DL
authors.lastname: Shepelyansky