Directed transport of Brownian particles in a double symmetric potential | Zendy

Laurent Sanchez-Palencia | Zendy

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Directed transport of Brownian particles in a double symmetric potential

Author(s) -

Laurent Sanchez-Palencia

Publication year - 2004

Publication title -

physical review e

Language(s) - English

Resource type - Journals

eISSN - 1550-2376

pISSN - 1539-3755

DOI - 10.1103/physreve.70.011102

Subject(s) - brownian motion , physics , hamiltonian (control theory) , symmetry breaking , symmetry (geometry) , classical mechanics , brownian dynamics , periodic potential , brownian motor , statistical physics , quantum mechanics , mathematics , geometry , work (physics) , mathematical optimization , ratchet

We investigate the dynamics of Brownian particles in internal state-dependent symmetric and periodic potentials. Although no space or time symmetryof the Hamiltonian is broken, we show that directed transport can appear. Wedemonstrate that the directed motion is induced by breaking the symmetry of thetransition rates between the potentials when these are spatially shifted.Finally, we discuss the possibility of realizing our model in a system of coldparticles trapped in optical lattices.Comment: to appear in Physical Review

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