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arXiv · 2202.10599

Rank One Perturbations Supported by Hybrid Geometries and Their Deformations

Fatih Erman·Sema Seymen·Osman Teoman Turgut
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Abstract

We study the hybrid type of rank one perturbations in $\mathbb{R}^2$ and $\mathbb{R}^3$, where the perturbation supported by a circle/sphere is considered together with the delta potential supported by a point outside of the circle/sphere. The construction of the self-adjoint Hamiltonian operator associated with the formal expressions for the rank one perturbation supported by a circle and by a point is explicitly given. The bound state energies and scattering properties for each problem are also studied. Finally, we consider the rank one perturbation supported by a deformed circle/sphere and show that the first order change in the bound state energies under small deformations of the circle/sphere has a simple geometric interpretation. Finally, we consider the delta potentials supported by deformed circle/sphere and show that the first order change in the bound state energies under small deformations of circle/sphere has a simple geometric interpretation.

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Fatih Erman, Sema Seymen, Osman Teoman Turgut. 2022-02-22. Rank One Perturbations Supported by Hybrid Geometries and Their Deformations. https://doi.org/10.1063/5.0090401

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