Sharp spectral stability for a class of singularly perturbed pseudo-differential operators

DOI10.4171/jst/471arXiv2303.00112OpenAlexW4388978390MaRDI QIDQ6146945

Radu Purice, Horia D. Cornean

Publication date: 31 January 2024

Published in: Journal of Spectral Theory (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2303.00112

zbMATH Keywords

singular perturbationsspectral gapspseudo-differential operatorsspectral edges

Mathematics Subject Classification ID

Pseudodifferential operators as generalizations of partial differential operators (35S05) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10) Perturbation theories for operators and differential equations in quantum theory (81Q15)

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