The Vacuum Structure of Light-Front ${\varphi }_{1+1}^4$-Theory

T. Heinzl, C. Stern, E. Werner +1

We discuss the vacuum structure of ${\varphi }^4$-theory in 1+1 dimensions quantised on the light-front $x^{+}=0$. To this end, one has to solve a non-linear, operator-valued constraint equa…