Abstract
We extend a result of Davies and Nath (J Comput Appl Math 148(1):1–28, 2002) on the location of eigenvalues of Schrödinger operators with slowly decaying complex-valued potentials to higher dimensions. In this context, we also discuss various examples related to the Laptev and Safronov conjecture (Laptev and Safronov in Commun Math Phys 292(1):29–54, 2009).
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Notes
Note that \(\Vert V_n^{\frac{1}{2}}\psi _n\Vert _2\) is finite in view of Sobolev embedding.
Similarly, the previous example could also be regarded as a simplified one-dimensional version.
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Acknowledgements
The author gratefully acknowledges the hospitality of the Institut Mittag-Leffler and the invitation to the thematic program Spectral Methods in Mathematical Physics. The present article was written during the authors stay. The idea to use Lemma 4 and the proof thereof is attributed to Chris Sogge, to whom the author is thankful.
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Cuenin, JC. Improved Eigenvalue Bounds for Schrödinger Operators with Slowly Decaying Potentials. Commun. Math. Phys. 376, 2147–2160 (2020). https://doi.org/10.1007/s00220-019-03635-w
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DOI: https://doi.org/10.1007/s00220-019-03635-w