Title : |
Puzzles in the theory of heat conduction in low-dimensional systems |
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Speaker | : | Prof. Abhishek Dhar, ICTS, Bangalore |
Date | : | June 13, 2018 |
Time | : | 3:00 PM |
Venue | : | Lecture Hall-1 |
Abstract | : |
Fourier's law of heat conduction predicts that heat propagation in a solid is diffusive. Fourier's law is a phenomenological macroscopic law and its derivation for a microscopic model with Hamiltonian dynamics is an open problem. A large number of studies over the last few decades suggest that this law is in fact not generally valid in low-dimensional systems. It appears that the heat carriers perform super-diffusive Levy walks rather than simple random walks. I will discuss what we presently know about this problem and some of the interesting open questions in this field. |