Spectral stability of Schrödinger operators with subordinated complex potentials

Abstract

We prove that the spectrum of Schrödinger operators in three dimensions is purely continuous and coincides with the non-negative semiaxis for all potentials satisfying a form-subordinate smallness condition. By developing the method of multipliers, we also establish the absence of point spectrum for Schrödinger operators in all dimensions under various alternative hypotheses, still allowing complex-valued potentials with critical singularities.

Locations

• Journal of Spectral Theory - View
• BIRD (Basque Center for Applied Mathematics) - View - PDF