Vector kink-dark complex solitons in a three-component Bose–Einstein condensate

Yan Li,Yan-Hong Qin,Li-Chen Zhao,Zhan-Ying Yang,Wen-Li Yang

Figure 5. State transition between dark soliton and kink. (a1)–(a3): the collision between a kink and a kink pair. It is seen that the kink soliton is converted into a dark soliton in their collision region. The parameters are ${\phi }_{1}=\tfrac{14}{15}\pi ,{\phi }_{2}=\tfrac{7}{15}\pi -\arcsin {v}_{2}$. In (b1)–(b3): the interaction between a dark soliton and a kink pair. For this case, the dark soliton is transformed to a kink in their collision region. The parameters are set as ${\phi }_{1}=0.8\pi ,{\phi }_{2}=0.9\pi -\arcsin {v}_{2}$. The other other parameters are v1 = v3 = 0, v2 = −0.1, d1 = −20, d2 = 0, d3 = 20.