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DY: Fachverband Dynamik und Statistische Physik

DY 7: Stochastic processes, brownian motion, and transport

DY 7.10: Vortrag

Dienstag, 23. März 2010, 12:00–12:15, H46

Intrinsic common noise in a system of two coupled Brusselators — •Amitabha Nandi and Benjamin Lindner — Max-Planck Institut für Physik komplexer Systeme, Nöthnitzer Str. 38 01187 Dresden, Germany.

We investigate the effect of coupling two chemical subsystems through diffusion of chemical species. Such coupling schemes have been studied before at the level of macroscopic rate equations. Here we consider the Langevin description of the actual microscopic dynamics and show that diffusive coupling gives rise to a common noise term along with the elastic interaction. This term contributes negative or positive correlations thereby changing the total correlation between the two systems. As a model example, we study two diffusively coupled Brusselator systems. We show that depending on the dynamical regime, the intrinsic common noise due to coupling affects total correlation significantly.