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Article Dans Une Revue International Mathematics Research Notices Année : 2023

Eigenvalue asymptotics for confining magnetic Schrödinger operators with complex potentials

Résumé

This article is devoted to the spectral analysis of the electromagnetic Schrödinger operator on the Euclidean plane. In the semiclassical limit, we derive a pseudo-differential effective operator that allows us to describe the spectrum in various situations and appropriate regions of the complex plane. Not only results of the selfadjoint case are proved (or recovered) in the proposed unifying framework, but new results are established when the electric potential is complex-valued. In such situations, when the non-selfadjointness comes with its specific issues (lack of a "spectral theorem", resolvent estimates), the analogue of the "low-lying eigenvalues" of the selfadjoint case are still accurately described and the spectral gaps estimated.
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Dates et versions

hal-03533719 , version 1 (18-01-2022)
hal-03533719 , version 2 (25-01-2022)

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Léo Morin, Nicolas Raymond, San Vũ Ngọc. Eigenvalue asymptotics for confining magnetic Schrödinger operators with complex potentials. International Mathematics Research Notices, 2023, 17, pp.14547 - 14593. ⟨10.1093/imrn/rnac230⟩. ⟨hal-03533719v2⟩
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