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Ab Initio Calculation of the Spectrum and Structure of O16

Evgeny Epelbaum, Hermann Krebs, Timo A. Lähde, Dean Lee, Ulf-G. Meißner, and Gautam Rupak
Phys. Rev. Lett. 112, 102501 – Published 12 March 2014

Abstract

We present ab initio lattice calculations of the low-energy even-parity states of O16 using chiral nuclear effective field theory. We find good agreement with the empirical energy spectrum, and with the electromagnetic properties and transition rates. For the ground state, we find that the nucleons are arranged in a tetrahedral configuration of alpha clusters. For the first excited spin-0 state, we find that the predominant structure is a square configuration of alpha clusters, with rotational excitations that include the first spin-2 state.

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  • Received 10 January 2014

DOI:https://doi.org/10.1103/PhysRevLett.112.102501

© 2014 American Physical Society

Authors & Affiliations

Evgeny Epelbaum1, Hermann Krebs1, Timo A. Lähde2, Dean Lee3, Ulf-G. Meißner2,4,5, and Gautam Rupak6

  • 1Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44870 Bochum, Germany
  • 2Institute for Advanced Simulation, Institut für Kernphysik, and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany
  • 3Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
  • 4Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany
  • 5JARA-High Performance Computing, Forschungszentrum Jülich, D-52425 Jülich, Germany
  • 6Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762, USA

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Issue

Vol. 112, Iss. 10 — 14 March 2014

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