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Nuclear Theory·nucl-th

Friday·September 4, 2015

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 01

    [Submitted on 2 Sept 2015]

    Advances in the ab initio description of nuclear three-cluster systems

    Carolina Romero-Redondo🇺🇸 · Sofia Quaglioni🇺🇸 · Petr Navrátil🇨🇦 · Guillaume Hupin🇫🇷

    We introduce the extension of the ab initio no-core shell model with continuum to describe three-body cluster systems. We present results for the ground state of 6He and show improvements with respect to the description obtained within the no-core shell model and the no-core shell model/resonating group methods.

    Comments:
    Proceedings of the 21st International Conference on Few-Body Problems in Physics. May 18-22, 2015. Chicago, Illinois, USA
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1509.00878 [pdf]
    EPJ Web Conf.(2016)·0 citations
  2. 02

    [Submitted on 3 Sept 2015]

    Relativistic few-body methods

    Wayne Polyzou🇺🇸

    I discuss the role of relativistic quantum mechanics in few-body physics, various formulations of relativistic few-body quantum mechanics and how they are related.

    Comments:
    Contribution to the \it 21-st International Conference on Few-Body Problems in Physics, 8 pages, 2 figures
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Theory (hep-th)
    arXiv:
    1509.00928 [pdf]
    EPJ Web Conf.(2016)·2 citations
  3. 03

    [Submitted on 3 Sept 2015]

    Towards an ab initio description of the light-nuclei radiative captures

    Jérémy Dohet-Eraly · Petr Navrátil · Sofia Quaglioni · Wataru Horiuchi · Guillaume Hupin

    The and astrophysical factors are evaluated at low collision energies (less than 2.5 MeV in the centre-of-mass frame) within the no-core shell model with continuum approach using a renormalized chiral nucleon-nucleon interaction.

    Comments:
    4 pages, submitted as a proceeding of the 21st International Conference on Few-Body Problems in Physics
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1509.00971 [pdf]
    EPJ Web Conf.(2016)·3 citations
  4. 04

    [Submitted on 3 Sept 2015]

    Two neutron decay of 16Be

    A.E. Lovell · F.M. Nunes · I.J. Thompson

    Recently, the first example of two-neutron decay from the ground state of an unbound nucleus, Be, was seen. Three-body methods are ideal for exactly treating the degrees of freedom important for these decays. Using a basis expansion over hyperspherical harmonics and the hyperspherical R-matrix method, we construct a realistic model of Be in order to investigate its decay mode and the role of the two-neutron interaction. The neutron-Be interaction is constrained using shell model predictions. We obtain a ground state for Be that is over-bound by approximately 1 MeV with a width of approximately 0.23 MeV. This suggests, that for such systems, the three-body force needs to be repulsive.

    Comments:
    4 pages, 1 figure, contribution to the proceedings for the 21st International Conference on Few Body Problems in Physics, Chicago, Illinois, USA
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1509.01193 [pdf]
    EPJ Web Conf.(2016)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE