Solitons in Bose-Einstein Condensates with time-dependent atomic scattering length in an expulsive parabolic and complex potential

Abstract

We present two families of analytical solutions of the one-dimensional nonlinear Schrödinger equation which describe the dynamics of bright and dark solitons in Bose-Einstein condensates (BECs) with the time-dependent interatomic interaction in an expulsive parabolic and complex potential. We also demonstrate that the lifetime of both a bright soliton and a dark soliton in BECs can be extended by reducing both the ratio of the axial oscillation frequency to radial oscillation frequency and the loss of atoms. It is interested that a train of bright solitons may be excited with a strong enough background. An experimental protocol is further designed for observing this phenomenon.

8 pages, 5 figures

References in corpus (1)

• Controlling soliton interactions in Bose-Einstein condensates by synchronizing the Feshbach resonance and harmonic trap

Cited by in corpus (1)

• Dynamics and modulation of ring dark soliton in 2D Bose-Einstein condensates with tunable interaction