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Glassy dynamics in strongly anharmonic chains of oscillators

Abstract : We review the mechanism for transport in strongly anharmonic chains of oscillators near the atomic limit where all oscillators are decoupled. In this regime, the motion of most oscillators remains close to integrable, i.e. quasi-periodic, on very long time scales, while a few chaotic spots move very slowly and redistribute the energy across the system. The material acquires several characteristic properties of dynamical glasses: intermittency, jamming and a drastic reduction of the mobility as a function of the thermodynamical parameters. We consider both classical and quantum systems, though with more emphasis on the former, and we discuss also the connections with quenched disordered systems, which display a similar physics to a large extent.
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Wojciech de Roeck, François Huveneers. Glassy dynamics in strongly anharmonic chains of oscillators. Comptes Rendus. Physique, Académie des sciences (Paris), 2019, Fourier and the science of today / Fourier et la science d'aujourd'hui, 20 (5), pp.419-428. ⟨10.1016/j.crhy.2019.08.007⟩. ⟨hal-02141866⟩

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