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Accurate Evaluation of Quantum Integrals (1995)

Galant, D. C. ; Witteborn, Fred C. ; Goorvitch, D.

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Publication Date: 2019-07-18

Description: Combining an appropriate finite difference method with Richardson's extrapolation results in a simple, highly accurate numerical method for solving a Schrodinger's equation. Important results are that error estimates are provided, and that one can extrapolate expectation values rather than the wavefunctions to obtain highly accurate expectation values. We discuss the eigenvalues, the error growth in repeated Richardson's extrapolation, and show that the expectation values calculated on a crude mesh can be extrapolated to obtain expectation values of high accuracy.

Keywords: Theoretical Mathematics

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