Reminder CMSP Seminar: Joint ICTP/SISSA SP on Tuesday 19 May

[ICTP/CM]

CMSP SEMINAR:
JOINT ICTP/SISSA STATISTICAL PHYSICS SEMINAR

When: Tuesday, May 19, 11:00 am

Where Zoom Meeting ID: https://zoom.us/j/799099444
The link is to enter to the virtual room and will be available few minutes
before the starting time but you should install Zoom before.

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Speaker: Matthias Krüger (Georg-August-Universität Göttingen)
Title: Brownian Motion in a Non-equilibrium Bath: Theory and Experiment


Abstract: Brownian motion is a paradigmatic stochastic process, and well 
studied both theoretically as well as experimentally. A natural 
occurance of Brownian motion is found for micron sized particles 
immersed in simple, Newtonian fluids. The motion of this particle is 
then a (nearly) perfect random walk, and obeys a linear (Markovian) 
stochastic equation. This is not true if the particle is suspended in a 
viscoelastic fluid, which is characterized by long relaxation times and 
pronounced nonlinear properties. The latter case if thus a good model 
system for nonlinear stochastic processes, and studying it is 
challenging, both theoretically as well experimentally. For example, 
driving the particle drives the viscoelastic fluid out of equilibrium, 
so that Brownian motion in a non-equilibrium bath is obtained. We will 
discuss recent theoretical and experimental progress regarding this 
scenario.