Schrödinger equation with finitely many $\delta$-interactions: closed form, integral and series representations for solutions

Vladislav V. Kravchenko, Víctor A. Vicente-Benítez

A closed form solution for the one-dimensional Schrödinger equation with a finite number of $\delta$-interactions \[ \mathbf{L}_{q,\mathfrak{I}_{N}}y:=-y^{\prime\prime}+\left( q(x)+\sum…