Boundary concentration of a Gauged nonlinear Schrödinger equation on large balls

This paper is motivated by a gauged Schrödinger equation in dimension 2 including the so-called Chern–Simons term. The radially symmetric case leads to an elliptic problem with a nonlocal defocusing term, in competition with a local focusing nonlinearity. In this work we pose the equations in a ball under homogeneous Dirichlet boundary conditions. By using singular perturbation arguments we prove existence of solutions for large values of the radius. Those solutions are located close to the boundary and the limit profile is given.