Ab Initio Coupled-Cluster Calculations for Nuclei Using Methods of Quantum Chemistry

TitleAb Initio Coupled-Cluster Calculations for Nuclei Using Methods of Quantum Chemistry
Publication TypeJournal Article
Year of Publication2006
AuthorsPiecuch, P, Wloch, M, Dean, DJ, Gour, JR, Hjorth-Jensen}, M{, Papenbrock, T, Kowalski, K
JournalEuropean Physics Journal A
Volume25
Issue1
Pagination485-488
Date Published09/2005
Abstract

We report preliminary large scale ab initio calculations of ground and excited states of 16O using quantum chemistry inspired coupled cluster methods and realistic two-body interactions. By using the renormalized Hamiltonians obtained with a no-core G-matrix approach, we obtain the virtually converged results at the level of two-body interactions. Due to the polynomial scaling with the system size that characterizes coupled cluster methods, we can probe large model spaces with up to seven major oscillator shells, for which standard non-truncated shell-model calculations are not possible.