${\mathsf{D}}^2=\mathsf{H}+1/4$ with point interactions

A. Posilicano, L. Reginato

Let $\mathsf{D}$ and $\mathsf{H}$ be the self-adjoint, one-dimensional Dirac and Schrödinger operators in $L^2(\mathbb{R};{\mathbb{C}}^2)$ and $L^2(\mathbb{R};\mathbb{C})$ re…