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Translationally invariant clusters in coordinate space : higher-order clusters and the Gaussian expansion basis
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bishopt, R. F. Buendfat, E. Flynng, M. F. Guardiolal, R. |
| Copyright Year | 1993 |
| Abstract | We develop and apply a series of extensible and flexible cluster expansions, tailored specifically io few-body systems. Our analysis begins by recalling previous work which examined the role of lhe cenm-of-mass (0.0 motion in the few-body system. We show how the problems generated by the CM motion generally associated with correlated wavefunctions can be explicitly avoided altogether, and from the ourset. by reshicting the excitations induced to those which leave the CM undisturbed This is accomplished by expressing all correlation functions solely in terms of relative coordinates. All such functions are expanded in bases of Gaussians, which are shown to be highly efficient wmputationally. Applications to the 3H and 4He nuclei are p-nted. Resulrs show that the method produces both accyrare energies and wavefunction |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://hera.ugr.es/doi/15014848.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
