It is well known that Schrödinger operator with degenerate kinetic energies may support infinitely many weakly coupled bound states. Hainzl and Seiringer proved that the eigenvalues of $|p^2-1|-\lambda V$ are exponentially small as the coupling constant $\lambda$ tends to zero, and they connected the problem to an effective operator on the sphere. This holds essentially under the assumption that the potential is integrable. In this talk I will show that one can relax this condition considerably and cover a much larger class of potentials. This is joint work with Konstantin Merz.
To get an invitation to the zoom-meeting, please contact one of the organisers (see the series link above).