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• W2040572286 abstract "The advantage of using a Discrete Variable Representation (DVR) is that the Hamiltonian of two interacting particles can be constructed in a very simple form. However the DVR Hamiltonian is approximate and, as a consequence, the results cannot be considered as variational ones. We will show that the variational character of the results can be restored by performing a reduced number of integrals. In practice, for a variational description of the lowest n bound states only n(n+1)/2 integrals are necessary whereas D(D+1)/2 integrals are enough for the scattering states (D is the dimension of the S matrix). Applications of the method to the study of dimers of He, Ne and Ar, for both bound and scattering states, are presented." @default.
• W2040572286 created "2016-06-24" @default.
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• W2040572286 date "2004-09-10" @default.
• W2040572286 modified "2023-10-17" @default.
• W2040572286 title "Variational estimates using a discrete variable representation" @default.
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• W2040572286 doi "https://doi.org/10.1103/physreva.70.032503" @default.
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