1--D Schrödinger operators with local interactions on a discrete set

Aleksey Kostenko, Mark Malamud

Spectral properties of 1-D Schrödinger operators ${\mathrm{H}}_{X,\alpha }:=-\frac{{\mathrm{d}}^2}{\mathrm{d}{x}^2}+{\sum }_{x_n\in X}{\alpha }_n\delta (x-x_n)$ with local point interactions on a discrete…