On integrable discretization of the inhomogeneous Ablowitz-Ladik model

Details On integrable discretization of the inhomogeneous Ablowitz-Ladik model On integrable discretization of the inhomogeneous Ablowitz-Ladik model

1999-10-13

arxiv.org/abs/solv-int/9910004v1

Phys. Lett. A 258, 18-24 (1999)

Nonlinear Sciences

Exactly Solvable and Integrable Systems

6 pages, 1 figure, LaTeX

Scientific paper

10.1016/S0375-9601(99)00336-9

An integrable discretization of the inhomogeneous Ablowitz-Ladik model with a linear force is introduced. Conditions on parameters of the discretization which are necessary for reproducing Bloch oscillations are obtained. In particular, it is shown that the step of the discretization must be comensurable with the period of oscillations imposed by the inhomogeneous force. By proper choice of the step of the discretization the period of oscillations of a soliton in the discrete model can be made equal to an integer number of periods of oscillations in the underline continuous-time lattice.

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