Analytic continuation of eigenvalues of a quartic oscillator

DOI10.1007/s00220-008-0663-6zbMath1184.34083arXiv0802.1461OpenAlexW2106118166MaRDI QIDQ731341

Alexandre Eremenko, Andrei Gabrielov

Publication date: 2 October 2009

Published in: Communications in Mathematical Physics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/0802.1461

zbMATH Keywords

eigenvalueSchrödinger operatoranalytic continuationramification points

Mathematics Subject Classification ID

Particular ordinary differential operators (Dirac, one-dimensional Schrödinger, etc.) (34L40) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10) Eigenvalues, estimation of eigenvalues, upper and lower bounds of ordinary differential operators (34L15) Boundary eigenvalue problems for ordinary differential equations (34B09)

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