Few-Body Systems

, Volume 54, Issue 7, pp 1371–1375

Benchmark of the No-Core Monte Carlo Shell Model in Light Nuclei

  • T. Abe
  • P. Maris
  • T. Otsuka
  • N. Shimizu
  • Y. Utsuno
  • J. P. Vary
  • T. Yoshida
Article

DOI: 10.1007/s00601-013-0678-1

Cite this article as:
Abe, T., Maris, P., Otsuka, T. et al. Few-Body Syst (2013) 54: 1371. doi:10.1007/s00601-013-0678-1

Abstract

We report the benchmark comparison of the properties in light nuclei among the Monte Carlo Shell Model, Full Configuration Interaction and No Core Full Configuration approaches. For this benchmark process, we compare results for the energies of 9 states from helium-4 to carbon-12 that includes 7 ground states and 2 excited states. The JISP16 NN interaction is adopted. The Coulomb and all other interactions are neglected. The contributions of spurious center-of-mass excitation are not discussed here. The basis space is truncated by the cutoff of the single-particle basis space, Nshell. We select the optimal ħω that minimizes the energy for that state and basis space cutoff. The MCSM results are obtained by exploiting the recent development in the computation of two-body matrix elements between non-orthogonal Slater determinants and technique of the energy-variance extrapolation. All results are found to be consistent with each other to within quoted uncertainties when they could be quantified. As an exploratory attempt, we also demonstrate how to draw the intrinsic density from no-core MCSM wave functions by taking the 8Be ground state as an example.

Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • T. Abe
    • 1
  • P. Maris
    • 2
  • T. Otsuka
    • 1
    • 3
    • 4
  • N. Shimizu
    • 3
  • Y. Utsuno
    • 5
  • J. P. Vary
    • 2
  • T. Yoshida
    • 3
  1. 1.Department of PhysicsThe University of TokyoTokyoJapan
  2. 2.Department of Physics and AstronomyIowa State UniversityAmesUSA
  3. 3.Center for Nuclear Study, The University of TokyoTokyoJapan
  4. 4.National Superconducting Cyclotron Laboratory, Michigan State UniversityEast LansingUSA
  5. 5.Advanced Science Research Center, Japan Atomic Energy AgencyTokaiJapan