Geometrically constrained sine-Gordon field: BPS solitons and their collisions

E. da Hora, L. Pereira, C. dos Santos +1

We consider an enlarged $(1+1)$-dimensional model with two real scalar fields, $\varphi$ and $\chi$ whose scalar potential $V(\varphi ,\chi )$ has a standard ${\chi }^4$ sector and a sine-Gordon one for $\varphi$…