A new efficient method for calculating perturbation energies using functions which are not quadratically integrable

DOI10.1088/0305-4470/29/5/008zbMath0943.81502OpenAlexW2068565945MaRDI QIDQ4227683

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Publication date: 4 September 2000

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

Full work available at URL: https://doi.org/10.1088/0305-4470/29/5/008

zbMATH Keywords

eigenvaluesrenormalizationbound stateswavefunctionsone-dimensional Schrödinger equationnumerical-integration perturbative approach

Mathematics Subject Classification ID

Particular ordinary differential operators (Dirac, one-dimensional Schrödinger, etc.) (34L40) Perturbation theories for operators and differential equations in quantum theory (81Q15)

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One-dimensional Schrödinger equation and its exact representation on a discrete lattice. ⋮ Renormalized perturbation theory for quartic anharmonic oscillator

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