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Dresden 2006 – scientific programme

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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.60: Poster

Thursday, March 30, 2006, 16:00–18:00, P1

Two particles with bistable coupling on a ratchet — •Jörg Menche1,2 and Lutz Schimansky-Geier11Humboldt Universität zu Berlin — 2Universität Leipzig

We study the motion of two Brownian particles coupled by a bistable potential on a periodically rocked ratchet. Bistable coupling symmetrizes the two particles and admits a richer dynamics that cannot be found with linear coupling or a single particle. Depending on the coupling strength and the equilibrium distance we find different step patterns and current reversals. We present numerical results and compare them with analytical solutions in limiting cases of adiabatically slow rocking and of rigid coupling.

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