Publications by the Laboratory of Theoretical Physics

Bose–Einstein Condensates with Inhomogeneous Scattering Length in One and Two Dimensions, F. Kh. Abdullaev, V. S. Filho, A. Gammal, and L. Tomio, Physics of Particles and Nuclei, 36, Suppl. 2, S213–S216 (2005).   [PDF-file  (183 kB)] Abstract: We report on investigations of the properties of bright solitons in Bose–Einstein condensates in the presence of point-like spatial inhomogeneities, in one and two dimensions. By considering an analytical variational approach and full numerical simulations, we describe such processes due to interactions between the soliton and the inhomogeneity as the trapping, reflection, and transmission of bright matter solitons. We also study the critical number of particles as a function of the magnitude of the impurity. 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.