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CATEGORY:
Statistical & Bio Seminar
TITLE:
The Mpemba Index and anomalous relaxation
Speaker:
Prof. Marija Vucelja
Affiliation:
University of Virginia
WHEN:
Wednesday
07/06/2017, 13:30 - 14:30
WHERE:
Lewiner, Seminar Room (412)
Organizer:
Yariv Kafri
Site:
-
Remarks:
-

Abstract

Mpemba effect is a counter-intuitive relaxation phenomenon that occurs when, upon coupling to a cold thermal reservoir, a system prepared at a hot temperature relaxes to equilibrium faster than a system prepared at an intermediate temperature. Here we study the possibility of the Mpemba effect for a large class of thermal relaxation processes. We show that an enhanced Mpemba effect is possible for some choices of the initial temperatures, decreasing considerably the cooling times, and introduce a topological index that identifies the existence of such enhancement. We estimate the probability of the Mpemba index for a class of systems with random barriers and energies and show that it is non-vanishing.  

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