Exact BPS double-kinks in generalized ${\varphi }^4$, ${\varphi }^6$ and sine-Gordon models

R. Casana, E. da Hora, F. C. Simas

We consider a $(1+1)$-dimensional theory with a single real scalar field $\varphi$ whose kinematics is modified by a generalizing function $f(\varphi )$. After briefly reviewing its Bogomol'nyi…