Fig. 1. Evolution of wave function and particle number density of static dark soliton with x for different n. (a) Wave function with its local magnification shown in inset; (b) particle number density

Fig. 2. Variation of particle number density and phase of gray soliton with ζ for different n at v=0.8s. (a) Particle number density; (b) phase

Fig. 3. Variation of soliton energy with n for different speeds