Quantum Monte Carlo calculations of nuclei with A{le}7

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.1720· OSTI ID:542694

Pudliner, B S; Pandharipande, V R ^[1]; Carlson, J ^[2]; Pieper, S C; Wiringa, R B ^[3]

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1. Physics Department, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States)
2. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We report quantum Monte Carlo calculations of ground and low-lying excited states for nuclei with A{le}7 using a realistic Hamiltonian containing the Argonne v{sub 18} two-nucleon and Urbana IX three-nucleon potentials. A detailed description of the Green{close_quote}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 {sup 6}Li and {sup 7}Li that are stable against breakup into subclusters, but somewhat underbound compared to experiment. We also have results for {sup 6}He, {sup 7}He, 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 {sup 6}He and {sup 7}He. 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. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 542694
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 56; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DENSITY
EXCITED STATES
GREEN FUNCTION
GROUND STATES
HAMILTONIANS
HELIUM 6
HELIUM 7
ISOBARIC ANALOGS
LITHIUM 6
LITHIUM 7
MONTE CARLO METHOD
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
POLARIZATION
SHELL MODELS