Figure 1

Variation of the external confinement: (a) combination of expulsive and OL for β = 0.4, M = −0.25 and p = 0; (b) combination of expulsive and BOL for β = 2.5, M = −0.25, and p = 0; (c) combination of expulsive and OL with different M for β = 0.4, M = −0.1, p = 0; and (d) combination of linear, expulsive and BOL for β = 0.4, M = −0.25, p = 1. Other parameters are γ = 4, l = 0.84 and t = 0. Position coordinate is scaled by the harmonic oscillator length.