Freezing of Nonlinear Bloch Oscillations in the Generalized Discrete Nonlinear Schrodinger Equation

Details Freezing of Nonlinear Bloch Oscillations in the Generalized Discrete Nonlinear Schrodinger Equation Freezing of Nonlinear Bloch Oscillations in the Generalized Discrete Nonlinear Schrodinger Equation

2004-03-03

arxiv.org/abs/nlin/0403004v2

Phys. Rev. E 70, 036614 (2004)

Nonlinear Sciences

Pattern Formation and Solitons

LaTeX, 7 pages, 6 figures. Improved version to appear in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.70.036614

The dynamics in a nonlinear Schrodinger chain in an homogeneous electric field is studied. We show that discrete translational invariant integrability-breaking terms can freeze the Bloch nonlinear oscillations and introduce new faster frequencies in their dynamics. These phenomena are studied by direct numerical integration and through an adiabatic approximation. The adiabatic approximation allows a description in terms of an effective potential that greatly clarifies the phenomenon.

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