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Modelling the thermal and mechanical response of glasses, including different dissipation processes
Glasses are disorderd materials, and thus their vibrational as well as thermal properties are very different from the crystal. In this context, it si important to revise the usual description of solids based on wave vector calculations. We will first discuss the characteristics of the normal modes in glasses and their effect on the vibrational density of states (Boson Peak), as well as on their rheological properties (theory of "harmonic dissipation") and thermal transport (thermal conductivity). We will then discuss anharmonic processes, especially those based on the submicrometric plastic response of glasses and discuss possible constitutive laws at a continuum scale, able to describe the large scale mechanical response including dissipative anharmonic processes.