Proton hole states in 208Pb, studied by means of a self-consistent solution of the second-order Dyson equation for single-particle propagators

Autor:	Kristiaan Heyde, D. Van Neck, Michel Waroquier, Veerle Van der Sluys
Rok vydání:	1993
Předmět:	Physics Nuclear and High Energy Physics Formalism (philosophy of mathematics) Quantum mechanics Quantum electrodynamics Propagator Centroid Spectral function Self consistent Deep hole Residual
Zdroj:	Nuclear Physics A. 563:1-20
ISSN:	0375-9474
DOI:	10.1016/0375-9474(93)90009-m
Popis:	The single-particle self-energy in finite nuclei is constructed in a microscopic way by means of the Green-function formalism. We present calculations for the 208 Pb system which are fully self-consistent up to second order in the residual interaction. This leads to an improved description of damping effects in the spectral function for deeply bound hole states. The theoretical results are compared with experimental (e, e'p) results. Global properties of the single-particle strength distributions for deep hole states, such as the centroids and widths, are well reproduced. Finally some comments are made about the meaning of occupation probabilities for shell-model orbits.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a1a119ac56199716b2f34af88d97aaeb https://doi.org/10.1016/0375-9474(93)90009-m Zobrazit plný text záznamu