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arXiv · 2307.14438

Resonances and inverse problems for energy-dependent potentials on the half-line

Evgeny Korotyaev·Andrea Mantile·Dmitrii Mokeev
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Abstract

We consider Schr\"{o}dinger equations with linearly energy-depending potentials which are compactly supported on the half-line. We first provide estimates of the number of eigenvalues and resonances for such complex-valued potentials under suitable regularity assumptions. Then, we consider a specific class of energy-dependent Schr\"{o}dinger equations without eigenvalues, defined with Miura potentials and boundary conditions at the origin. We solve the inverse resonance problem in this case and describe sets of iso-resonance potentials and boundary condition parameters. Our strategy consists in exploiting a correspondance between Schr\"{o}dinger and Dirac equations on the half-line. As a byproduct, we describe similar sets for Dirac operators and show that the scattering problem for Schr\"{o}dinger equation or Dirac operator with an arbitrary boundary condition can be reduced to the scattering problem with the Dirichlet boundary condition.

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Evgeny Korotyaev, Andrea Mantile, Dmitrii Mokeev. 2023-07-26. Resonances and inverse problems for energy-dependent potentials on the half-line. https://arxiv.org/abs/2307.14438

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