Given the following potential: $$ \begin{cases} \infty & x\leq -d \\ -V_0 \delta(x) & x > -d \end{cases} $$ with d > 0 I would like to compute the condition that has to be verified in order to have at least one bound state. From $\hat{H} \psi(x) = E_n \psi(x)$ and assuming we ha...