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Phys. Rev. C 76, 044305 (2007) [8 pages]

Benchmark calculations for 3H, 4He, 16O, and 40Ca with ab initio coupled-cluster theory

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G. Hagen1,2,3, D. J. Dean1, M. Hjorth-Jensen4, T. Papenbrock1,2, and A. Schwenk5
1Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
2Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
3Center of Mathematics for Applications, University of Oslo, N-0316 Oslo, Norway
4Department of Physics and Center of Mathematics for Applications, University of Oslo, N-0316 Oslo, Norway
5TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3

Received 11 July 2007; published 8 October 2007

We present ab initio calculations for 3H, 4He, 16O, and 40Ca based on two-nucleon low-momentum interactions Vlow k within coupled-cluster theory. For 3H and 4He, our results are within 70 and 10 keV of the corresponding Faddeev and Faddeev-Yakubovsky energies. We study in detail the convergence with respect to the size of the model space and the single-particle basis. For the heavier nuclei, we report practically converged binding energies and compare with other approaches.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.76.044305
DOI:
10.1103/PhysRevC.76.044305
PACS:
21.10.Dr, 21.30.-x, 21.60.Gx, 31.15.Dv
 
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