Comment on: Uncommonly accurate energies for the general quartic oscillator, Int. J. Quantum Chem., e26554 (2020), by P.Okun and K.Burke

Abstract

It is shown that for the one-dimensional quantum quartic anharmonic oscillator the numerical results obtained by Okun-Burke in Ref.2 are easily reproduced and can be significantly improved in Lagrange Mesh Method (based on non-uniform lattice).

8 pages, 3 Tables; several footnotes added, typos corrected, Ref.7 updated, Acknowledgements added

References in corpus (1)

• Two-body neutral Coulomb system in a magnetic field at rest: from Hydrogen atom to positronium

Cited by in corpus (6)

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• Study of the Quartic Anharmonic Oscillator Using the System's Wave Function Expansion in the Oscillator Basis
• From quartic anharmonic oscillator to double well potential