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Continuum contribution to polarizabilities and scaling
Author(s) -
Canuto Sylvio,
Goscinski Osvaldo
Publication year - 1979
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560160505
Subject(s) - eigenfunction , scaling , wave function , physics , computation , distribution function , ground state , oscillator strength , statistical physics , mathematical physics , quantum mechanics , mathematics , geometry , eigenvalues and eigenvectors , spectral line , algorithm
The role of the continuum, so important in ground‐state properties, is known to be less important and may even be negligible in the computation of polarizabilities and other higher negative moments of the oscillator strength distribution. This can be rationalized in terms of the solutions of the inhomogeneous equation generating the moments as an alternative to the dominating first term in an eigenfunction expansion. This leads in a natural form to the approximation F ϕ 0 (1 + w ( r )) for the perturbed wave function where 1 + w ( r ) represents a nonuniform scaling of the unperturbed function ϕ 0 .