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arXiv · 1503.08615

Accumulation of complex eigenvalues of an indefinite Sturm--Liouville operator with a shifted Coulomb potential

Michael Levitin·Marcello Seri
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Abstract

For a particular family of long-range potentials $V$, we prove that the eigenvalues of the indefinite Sturm--Liouville operator $A = \mathrm{sign}(x)(-Δ+ V(x))$ accumulate to zero asymptotically along specific curves in the complex plane. Additionally, we relate the asymptotics of complex eigenvalues to the two-term asymptotics of the eigenvalues of associated self-adjoint operators.

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Michael Levitin, Marcello Seri. 2015-09-18. Accumulation of complex eigenvalues of an indefinite Sturm--Liouville operator with a shifted Coulomb potential. https://doi.org/10.7153/oam-10-14

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