Regensburg 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

DY: Fachverband Dynamik und Statistische Physik

DY 18: Statistical Physics of Biological Systems I (Joint Session with DY)

DY 18.2: Vortrag

Dienstag, 8. März 2016, 12:15–12:30, H43

Physical driving of chemical reactions — •Vladimir Palyulin and Ulrich Gerland — Theory of Complex Biosystems, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany

Out-of-equilibrium physical processes can generate a chemical disequilibrium, if a suitable coupling mechanism exists. Such a physical driving of chemical reactions is relevant in contexts ranging from prebiotic evolution to atmospheric chemistry. Inspired by recent microfluidic experiments, we introduce a minimal model that couples biased diffusion as a generic form of physical non-equilibrium to reversible dimerization as the simplest nonlinear reaction. The model demonstrates explicitly that the effective coupling strength, i.e. the amplitude of the chemical response to a given amount of physical driving, depends on the boundary conditions as well as the relative speeds of the physical and chemical kinetics.