title: Entropic dynamical hysteresis in a driven system.
abstract: We show that the application of a time periodic field driving a Brownian particle between the two lobes of a two-dimensional bilobal enclosure results in a hysteresis loop in the variation of integrated probability of residence of the particle as a function of the field. The confinement of the particle is characterized by symmetry breaking of the hysteresis loop, and the area of the loop exhibits a turnover with variation of frequency of the field. This dynamical hysteresis is geometry controlled, entropic in nature, and amenable to theoretical analysis with a two-state model.
authors.affiliation: Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India.
authors.forename: Debasish
authors.initials: D
authors.lastname: Mondal
authors.forename: Moupriya
authors.initials: M
authors.lastname: Das
authors.forename: Deb Shankar
authors.initials: DS
authors.lastname: Ray
mesh_terms: D003198:Computer Simulation; D004058:Diffusion; D019277:Entropy; D008956:Models, Chemical; D008958:Models, Molecular; D015233:Models, Statistical; D017711:Nonlinear Dynamics