Non-Markovian Brownian motors operating in viscoelastic environments: anomalous transport and its thermodynamic efficiency

Date

Jun 18, 2013

Time

1:30 PM - 2:30 PM

Speaker

Igor Goychuk

Affiliation

University of Potsdam

Language

en

Main Topic

Physik

Other Topics

Physik

Host

Aleksei Chechkin

Description

I will discuss several generalizations of standard models of isothermal Brownian ratchets and motors (rocking vs. flashing) towards operating in viscoelastic environments like cytosol of biological cells. The model incorporates profound non-Markovian memory effects and has relation to fractional Langevin equation describing subdiffusion. However, it can be considered as independent approach to anomalous transport and subdiffusion, where viscoelastic environment is modeled just by a handful of auxiliary Brownian quasi-particles obeying a fractal scaling and corresponding to generalized Maxwell-Langevin model of viscoelasticity [1]. A plethora of unusual and highly nontrivial results is obtained which will be discussed in this talk. [1]I. Goychuk, Viscoelastic subdiffusion: generalized Langevin equation approach, Adv. Chem. Phys. 150, 187 (2012).

Last modified: Jun 18, 2013, 9:52:19 AM