Threshold of discrete Schrödinger operators with delta potentials on n-dimensional lattice. Issue 5 (24th March 2022) - Hiroshima, Fumio
ABSTRACT: Eigenvalue behaviours of Schrödinger operator defined on n -dimensional lattice with n + 1 delta potentials are studied. It can be shown that lower threshold eigenvalue and lower threshold resonance appear for n ≥ 2, and lower super-threshold resonance appears for n = 1.