Geometric Conditions for the Exact Observability of Schr\"{o}dinger Equations with Point Interaction and Inverse-Square Potentials on Half-Line

Abstract

We provide necessary and sufficient conditions for the exact observability of the Schrodinger equations with point interaction and inverse-square potentials on half-line. The necessary and sufficient condition for these two cases are derived from two Logvinenko-Sereda type theorems for generalized Fourier transform. Specifically, the generalized Fourier transform associated to the Schr\"{o}dinger operators with inverse-square potentials on half-line are the well known Hankel transforms. We provide a necessary and sufficient condition for a subset $\Omega$ such that a function with its Hankel transform supporting in a given interval can be bounded, in $L^{2}$-norm, from above by its restriction to the set $\Omega$, with constant independent of the position of the intervalComment: arXiv admin note: text overlap with arXiv:2003.11263, arXiv:2007.04096 by other author