Quantum Monte Carlo calculations of nuclei with A<~7

Phys. Rev. C 56, 1720 – Published 1 October 1997
B. S. Pudliner, V. R. Pandharipande, J. Carlson, Steven C. Pieper, and R. B. Wiringa

Abstract

We report quantum Monte Carlo calculations of ground and low-lying excited states for nuclei with A<~7 using a realistic Hamiltonian containing the Argonne v18 two-nucleon and Urbana IX three-nucleon potentials. A detailed description of the Green's-function Monte Carlo algorithm for systems with state-dependent potentials is given and a number of tests of its convergence and accuracy are performed. We find that the Hamiltonian being used results in ground states of both 6Li and 7Li that are stable against breakup into subclusters, but somewhat underbound compared to experiment. We also have results for 6He, 7He, and their isobaric analogs. The known excitation spectra of all these nuclei are reproduced reasonably well and we predict a number of excited states in 6He and 7He. We also present spin-polarized one-body and several different two-body density distributions. These are the first microscopic calculations that directly produce nuclear shell structure from realistic interactions that fit NN scattering data.

DOI: http://dx.doi.org/10.1103/PhysRevC.56.1720

  • Received 5 May 1997
  • Published in the issue dated October 1997

© 1997 The American Physical Society

Authors & Affiliations

B. S. Pudliner and V. R. Pandharipande

  • Physics Department, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801

J. Carlson

  • Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

Steven C. Pieper and R. B. Wiringa

  • Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

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