Continuum Effects and Three-Nucleon Forces in Neutron-Rich Oxygen Isotopes

G. Hagen, M. Hjorth-Jensen, G. R. Jansen, R. Machleidt, and T. Papenbrock
Phys. Rev. Lett. 108, 242501 – Published 15 June 2012

Abstract

We employ interactions from chiral effective field theory and compute binding energies, excited states, and radii for isotopes of oxygen with the coupled-cluster method. Our calculation includes the effects of three-nucleon forces and of the particle continuum, both of which are important for the description of neutron-rich isotopes in the vicinity of the nucleus O24. Our main results are the placement of the neutron drip line at O24, the assignment of spins, parities and resonance widths for several low-lying states of the drip line nucleus, and an efficient approximation that incorporates the effects of three-body interactions.

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  • Received 13 February 2012

DOI:https://doi.org/10.1103/PhysRevLett.108.242501

© 2012 American Physical Society

Authors & Affiliations

G. Hagen1,2, M. Hjorth-Jensen3,4,5, G. R. Jansen3, R. Machleidt6, and T. Papenbrock2,1

  • 1Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 2Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
  • 3Department of Physics and Center of Mathematics for Applications, University of Oslo, N-0316 Oslo, Norway
  • 4National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
  • 5Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
  • 6Department of Physics, University of Idaho, Moscow, Idaho 83844, USA

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Vol. 108, Iss. 24 — 15 June 2012

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