Scandone, Raffaele2020-03-092020-03-092019https://openscience.sissa.it/handle/1963/35345We study the low energy behavior of the resolvent of Schrodinger operators with finitely many point interactions in three dimensions. We also discuss the occurrence and the multiplicity of zero energy obstructions.enSpectral TheoryMathematical PhysicsZero modes and low-energy resolvent expansion for three dimensional Schrodinger operators with point interactionsPreprint