Simple approximation for the starting-energy-independent two-body effective interaction with applications toLi6

Autor:	James P. Vary, D. C. Zheng, R. J. McCarthy, B. R. Barrett
Rok vydání:	1994
Předmět:	Physics Nuclear and High Energy Physics Matrix (mathematics) Mathematical model Series (mathematics) Iterative method Simple (abstract algebra) Diagram Order (group theory) Statistical physics Atomic physics Space (mathematics)
Zdroj:	Physical Review C. 49:1999-2004
ISSN:	1089-490X 0556-2813
DOI:	10.1103/physrevc.49.1999
Popis:	We apply the Lee-Suzuki iteration method to calculate the linked-folded diagram series for a new Nijmegen local [ital NN] potential. We obtain an exact starting-energy-independent effective two-body interaction for a multishell, no-core, harmonic-oscillator model space. It is found that the resulting effective-interaction matrix elements can be well approximated by the Brueckner [ital G]-matrix elements evaluated at starting energies selected in a simply way. These starting energies are closely related to the energies of the initial two-particle states in the ladder diagrams. The exact'' and approximate effective interactions are used to calculate the energy spectrum of [sup 6]Li in order to test the utility of the approximate form.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::12b43bea42e1289f978dfb767db1c694 https://doi.org/10.1103/physrevc.49.1999 Zobrazit plný text záznamu