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

Wloch, M.; Dean, David Jarvis; Gour, J. R.; Piecuch, P.; Hjorth-Jensen, M.; Papenbrock, Thomas F.; Kowalski, K.

doi:10.1140/epjad/i2005-06-062-8

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

Journal Article · Thu Sep 01 00:00:00 EDT 2005 · European Physical Journal. A

DOI:https://doi.org/10.1140/epjad/i2005-06-062-8· OSTI ID:938771

Wloch, M. ^[1];

^[2]; Gour, J. R. ^[1]; Piecuch, P. ^[1]; Hjorth-Jensen, M. ^[3];

^[2]; Kowalski, K. ^[1]

Michigan State University, East Lansing
ORNL
University of Oslo, Norway

We report preliminary large scale ab initio calculations of ground and excited states of {sup 16}O 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.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

OSTI ID:: 938771

Journal Information:: European Physical Journal. A, Vol. 25, Issue N/A; ISSN 1434-6001

Country of Publication:: United States

Language:: English

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

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