An infinite sum related to WKB eigenvalues

DOI10.1063/1.531018zbMath0843.34056OpenAlexW2033501732MaRDI QIDQ4873335

R. P. Millane

Publication date: 16 April 1996

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

Full work available at URL: https://doi.org/10.1063/1.531018

zbMATH Keywords

Helmholtz equationinfinite sumvariational estimates of eigenvaluesWKB eigenvalues

Mathematics Subject Classification ID

Singular perturbations, turning point theory, WKB methods for ordinary differential equations (34E20) Approximation to limiting values (summation of series, etc.) (40A25) Eigenvalues, estimation of eigenvalues, upper and lower bounds of ordinary differential operators (34L15)

Cites Work

• Improving the accuracy of WKB eigenvalues

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