On radial positive normalized solutions of the Nonlinear Schrödinger equation in an annulus

Jian Liang, Linjie Song

We are interested in the following semilinear elliptic problem: \begin{equation*} \begin{cases} -Δu + λu = u^{p-1} \ \text{in} \ T,\\ u > 0, u = 0 \ \text{on} \ \partial T,\\ \int_…