Nonlinear Physics Seminar:"The weak, strong, inverse and optimal Mpemba effects."

Wed, 18/03/202012:00-13:30
Danciger B building, Seminar room
Lecturer: Dr. Oren Raz from the Weizmann Institute
We all have quite a strong intuition for heating and cooling processes: you couple a cold system to a hot reservoir - it gets hotter. However, a set of experimental results in various substances suggest that this is not always that simple: in some systems a hot initial condition cools faster. We suggest a non-equilibrium perspective to this "Mpemba effect", and predict several extensions of it - the inverse effect where a colder system heats up faster, the strong effect where there is exponential speedup in the heating/cooling rate and optimal relaxation protocols with non monotonous temperature profile.