Effective-potential classification of kink-antikink collision channels in the $\ddot{I}{•}^8$ scalar field theory

Yun Feng, Yunguo Jiang

We study kink-antikink collisions in a $(1+1)$-dimensional $\ddot{I}{•}^8$ scalar field theory with multiple degenerate vacua. We derive soliton solutions for different vacuum structures la…