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Center for Nonlinear Studies |
The "Mpemba effect" is a counter-intuitive phenomenon, where a hot system cools faster than a cold one, when both are cooled by coupling to a cold environment. This effect was discovered in water, but recently was observed in several other systems, including magnetic alloys, carbon nano-tube resonators, clathrate hydrates, and polymer crystallization. In the talk I will describe the known facts on this effect, describe several results which are based on non-equilibrium statistical mechanics, and will show that sometimes it is optimal to first cool the system before heating it even if there is no Mpemba effect, of any type, in the system.
Host: Yigit Subasi