Ferrodark soliton collisions: Breather formation, pair reproduction, and spin-mass separation

Yixiu Bai, Jiangnan Biguo, Xiaoquan Yu

We study collisions between a ferrodark soliton (FDS) and an antiFDS (${\mathbb{Z}}_2$ kinks in the spin order) in the easy-plane phase of spin-1 Bose-Einstein condensates (BECs). Fo…