Prof. Dr. Jean Bellissard (WWU Münster): A Toy Model for Viscosity

Donnerstag, 07.12.2017 16:30 im Raum M5
Mathematik und Informatik

Abstract: A short review of the temperature behavior of liquids viscosity will be provided. The concept of anankeon as a new degree of freedom will be described and its relation with elastic degrees of freedom discussed. Then a simplistic solvable model, based on a Stochastic Markov dynamics, will be proposed and the solution explained and discussed. One consequence is the prediction that in a certain subclass of liquids, there is a bifurcation leading to a new time scale, the Maxwell time, which is able to explain the exponential increase of the viscosity near the liquid-solid transition. A comparison with numerical simulations using molecular dynamics will be discussed.

Angelegt am Dienstag, 19.09.2017 14:42 von shupp_01
Geändert am Montag, 23.04.2018 13:23 von wuebbel
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Kolloquium Wilhelm Killing