Seminars & Colloquia Calendar
Heat transport in a disordered anharmonic chain
Abhishek Dhar - International Centre for Theoretical Sciences
Location: Hill 705
Date & time: Thursday, 13 December 2018 at 2:00PM - 3:00PM
Abstract: A one-dimensional chain of harmonic oscillators, with randomly chosen frequencies, and connected by anharmonic springs is considered. Heat transport in this disordered interacting system is studied. In the absence of the nonlinear couplings, the system has zero thermal conductivity. We investigate how this changes as one switches on the coupling. Numerical results of thermal conductivity from non-equilibrium steady state studies will be presented. In particular we address the question of the temperature dependence of the thermal conductivity, at low temperatures. Some interesting features related to the nature of finite-size effects and their dependence on the strengths of disorder and interactions will be discussed.
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