Improved sharp spectral inequalities for Schrödinger operators on the semi-axis
Lukas Schimmer
Loughborough University, UK
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Abstract
We prove a Lieb–Thirring inequality for Schrödinger operators on the semi-axis with Robin boundary condition at the origin. The result improves on a bound obtained by P. Exner, A. Laptev, and M. Usman [Commun. Math. Phys. 362 (2014), 531–541] albeit under the additional assumption . The main difference in our proof is that we use the double commutation method in place of the single commutation method. We also establish an improved inequality in the case of a Dirichlet boundary condition.
Cite this article
Lukas Schimmer, Improved sharp spectral inequalities for Schrödinger operators on the semi-axis. J. Spectr. Theory 13 (2023), no. 1, pp. 47–62
DOI 10.4171/JST/434