Converging sequences in the ab initio no-core shell model

C. Forssén, J. P. Vary, E. Caurier, and P. Navrátil
Phys. Rev. C 77, 024301 – Published 4 February 2008

Abstract

We demonstrate the existence of multiple converging sequences in the ab initio no-core shell model. By examining the underlying theory of effective operators, we expose the physical foundations for the alternative pathways to convergence. This leads us to propose a revised strategy for evaluating effective interactions for A-body calculations in restricted model spaces. We suggest that this strategy is particularly useful for applications to nuclear processes in which states of both parities are used simultaneously, such as for transition rates. We demonstrate the utility of our strategy with large-scale calculations in light nuclei.

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  • Received 18 September 2007

DOI:https://doi.org/10.1103/PhysRevC.77.024301

©2008 American Physical Society

Authors & Affiliations

C. Forssén*

  • Department of Fundamental Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden

J. P. Vary

  • Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA

E. Caurier

  • Institut de Recherches Subatomiques (IN2P3-CNRS-Université Louis Pasteur) Batiment 27/1, F-67037 Strasbourg Cedex 2, France

P. Navrátil

  • Lawrence Livermore National Laboratory, P. O. Box 808, L-414, Livermore, California 94551, USA

  • *c.forssen@fy.chalmers.se

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Vol. 77, Iss. 2 — February 2008

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