Ground states of the defocusing nonlinear Schrödinger equation with a point interaction in dimensions 2 and 3

Masahiro Ikeda, Gustavo de Paula Ramos

This paper is concerned with ground states of the defocusing nonlinear Schrödinger equation with a point interaction, \[ \mathrm{i} \partial_t ψ= -Δ_αψ+ ψ|ψ|^{p - 2} \quad \text{in…