Wave packet dynamics in periodically kicked nonlinear systems. (11th July 2017)

• Record Type: Journal Article
• Authors: Yu, Yan; Gao, Yi; Tong, Peiqing
• Is Part Of: Journal of physics. Volume 50:Number 15(2017:Aug. 01)
• Publication Date: 2017-07-11
• Subjects: kicked systems -- nonlinearity -- localization -- diffusion; 05.45.-a -- 04.30.Nk -- 63.20.Pw; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/aa7b6b
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We investigate the dynamics of a wave packet in a periodically kicked nonlinear Aubry–André (AA) model when the initial state is localized at a single lattice site. We found that, beside the nonlinearity strength β and the strength (phase) of the quasiperiodic potential λ ( θ ), the kicking period T can also influence the dynamical evolution of the wave packet. Especially when T, β ≪ 1, the periodically kicked nonlinear AA model can be reduced to a static nonlinear AA model with a rescaled nonlinearity strength β / T .