Publications by the Laboratory of Theoretical Physics

Propagation of matter wave solitons in periodic and random nonlinear potentials, F. Kh. Abdullaev and J. Garnier, Phys. Rev. A 72, 061605(R) (2005).   [PDF-file (161 kB)] Abstract: We study the motion of bright matter-wave solitons in nonlinear potentials, produced by periodic or random spatial variations of the atomic scattering length. We obtain analytical results for the soliton motion, the radiation of matter wave, and the radiative soliton decay in such configurations of the Bose-Einstein condensate. The stable regimes of propagation are analyzed. The results are in remarkable agreement with the numerical simulations of the Gross-Pitaevskii equation with periodic or random spatial variations of the mean field interactions. The papers have Copyright © by the corresponding publishers. The papers may be downloaded for personal use only. Any other use requires prior permission of the author and the publisher.