title: Bimodal response in periodically driven diffusive systems.
abstract: We study the response of one-dimensional diffusive systems, consisting of particles interacting via symmetric or asymmetric exclusion, to time-periodic driving from two reservoirs coupled to the ends. The dynamical response of the system can be characterized in terms of the structure factor. We find an interesting frequency-dependent response; the current-carrying majority excitons cyclically crosses over from a short wavelength mode to a long wavelength mode with an intermediate regime of coexistence. This effect being boundary driven decays inversely with system size. Analytic calculations show that this behavior is common to diffusive systems, both in the absence and presence of correlations.
authors.affiliation: TCMP Division, Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064, India. urna.basu@saha.ac.in
authors.forename: Urna
authors.initials: U
authors.lastname: Basu
authors.forename: Debasish
authors.initials: D
authors.lastname: Chaudhuri
authors.forename: P K
authors.initials: PK
authors.lastname: Mohanty
mesh_terms: D002621:Chemistry / Q000379:methods*; D004058:Diffusion; D005583:Fourier Analysis; D008027:Light; D008956:Models, Chemical; D015233:Models, Statistical; D009010:Monte Carlo Method; D009068:Movement; D010825:Physics / Q000379:methods*; D012542:Scattering, Radiation; D013269:Stochastic Processes