Berlin 2012 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 22: Posters I
DY 22.45: Poster
Wednesday, March 28, 2012, 17:00–19:00, Poster A
Stochastic description of a bistable frustrated unit — •Hannes Nagel1, Wolfhard Janke1, and Hildegard Meyer-Ortmanns2 — 1Institut für theoretische Physik, Universität Leipzig, Postfach 100920, D-04009 Leipzig — 2School of Engineering and Science, Jacobs University Bremen, P.O. Box 750561, D-28725 Bremen
Coupled positive and negative feedback loops are often found in biological systems that support oscillations. Here we consider genetic regulatory circuits. Two species of proteins A and B interact by activation/repression of their respective expression: A activates the production of itself as well as that of B, which in turn represses A. Starting from a previous deterministic study of that model we chose a fully stochastic approach to learn about the effect of the inherent noise in such (typically small) systems.