On the applicability of the quasiclassical approximation

DOI10.1007/BF01035948zbMath0338.35032MaRDI QIDQ1231086

P. V. Eljutin, D. V. Krivcenkov

Publication date: 1975

Published in: Theoretical and Mathematical Physics (Search for Journal in Brave)

Mathematics Subject Classification ID

Estimates of eigenvalues in context of PDEs (35P15) Schrödinger operator, Schrödinger equation (35J10) Singular perturbations, turning point theory, WKB methods for ordinary differential equations (34E20)

Cites Work

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• On the Connection Formulas and the Solutions of the Wave Equation