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- W1985149626 abstract "A new variational principle for the energy eigenvalues of a confined quantum system is presented. Whereas the exact wave function ensuremath{Psi} must vanish on the bounding surface of the region, the trial function ensuremath{psi} in this principle need not obey any specific boundary condition. Calculationally, the method is similar to the conventional variational method except that kinetic energy turns out to be a weighted average of -Fensuremath{psi}${mathrm{ensuremath{nabla}}}^{2}$ensuremath{psi} densuremath{tau} and F(ensuremath{nabla}ensuremath{psi})ensuremath{cdot}(ensuremath{nabla}ensuremath{psi})densuremath{tau} in the ratio 2:-1. Although the principle is not a definite (minimum) one, good results are obtained in several examples." @default.
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- W1985149626 date "1993-08-30" @default.
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- W1985149626 title "Variational principle for confined quantum systems" @default.
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- W1985149626 doi "https://doi.org/10.1103/physrevlett.71.1427" @default.
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