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

Abstract

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}

Authors:
;  [1];  [2]; ;  [3]
  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)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
542694
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 56; Journal Issue: 4; Other Information: PBD: Oct 1997
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; GROUND STATES; MONTE CARLO METHOD; EXCITED STATES; LITHIUM 6; LITHIUM 7; HELIUM 6; HELIUM 7; HAMILTONIANS; NUCLEON-NUCLEON POTENTIAL; GREEN FUNCTION; ISOBARIC ANALOGS; POLARIZATION; SHELL MODELS; NUCLEON-NUCLEON INTERACTIONS; DENSITY

Citation Formats

Pudliner, B.S., Pandharipande, V.R., Carlson, J., Pieper, S.C., and Wiringa, R.B. Quantum Monte Carlo calculations of nuclei with A{le}7. United States: N. p., 1997. Web. doi:10.1103/PhysRevC.56.1720.
Pudliner, B.S., Pandharipande, V.R., Carlson, J., Pieper, S.C., & Wiringa, R.B. Quantum Monte Carlo calculations of nuclei with A{le}7. United States. doi:10.1103/PhysRevC.56.1720.
Pudliner, B.S., Pandharipande, V.R., Carlson, J., Pieper, S.C., and Wiringa, R.B. Wed . "Quantum Monte Carlo calculations of nuclei with A{le}7". United States. doi:10.1103/PhysRevC.56.1720.
@article{osti_542694,
title = {Quantum Monte Carlo calculations of nuclei with A{le}7},
author = {Pudliner, B.S. and Pandharipande, V.R. and Carlson, J. and Pieper, S.C. and Wiringa, R.B.},
abstractNote = {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}},
doi = {10.1103/PhysRevC.56.1720},
journal = {Physical Review, C},
number = 4,
volume = 56,
place = {United States},
year = {1997},
month = {10}
}