Nonautonomous deformed solitons in a Bose—Einstein condensate

Abstract

We study exact single-soliton solutions of an attractive Bose—Einstein condensate governed by a one-dimensional nonautonomous Gross—Pitaevskii system. For several different forms of time-dependent atom—atom interaction and external parabolic potential which satisfy the exact integrability scenario, we construct a set of new analytical nonautonomous deformed-soliton solutions, including the macroscopic wave function and the position of soliton's center of mass. The soliton characteristics are modulated by the external field parameters and deformation factors related to the number of the condensed atoms and the initial conditions. The results suggest a simple and effective method for experimentally generating matter-wave deformed solitons and manipulating their motions.