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Title Quantum Monte Carlo calculations of light nuclei
Creator/Author Pieper, S.C. [Physics Division, Argonne National Laboratory, Argonne , Illinois 60439 (United States)]
Publication Date1998 Dec 01
OSTI IdentifierOSTI ID: 338640
Report Number(s)CONF-980672--
DOE Contract NumberW-31109-ENG-38
Other Number(s)APCPCS; ISSN 0094-243X
Resource TypeJournal Article
Resource RelationAIP Conference Proceedings ; VOL. 455 ; ISSUE: 1 ; ENAM`98: 2. international conference on exotic nuclei and atomic masses, Bellaire, MI (United States), 23-27 Jun 1998 ; PBD: Dec 1998
Subject66 PHYSICS ; HELIUM; PROTON-PROTON INTERACTIONS; LIGHT NUCLEI; NUCLEAR STRUCTURE; ENERGY LEVELS; PAIRING INTERACTIONS; HAMILTONIAN FUNCTION; MONTE CARLO METHOD; WAVE FUNCTIONS
Description/Abstract Quantum Monte Carlo calculations using realistic two- and three-nucleon interactions are presented for nuclei with up to eight nucleons. We have computed the ground and a few excited states of all such nuclei with Greens function Monte Carlo (GFMC) and all of the experimentally known excited states using variational Monte Carlo (VMC). The GFMC calculations show that for a given Hamiltonian, the VMC calculations of excitation spectra are reliable, but the VMC ground-state energies are significantly above the exact values. We find that the Hamiltonian we are using (which was developed based on{sup 3}H,{sup 4}He, and nuclear matter calculations) underpredicts the binding energy of p-shell nuclei. However our results for excitation spectra are very good and one can see both shell-model and collective spectra resulting from fundamental many-nucleon calculations. Possible improvements in the three-nucleon potential are also be discussed.{copyright}{ital 1998 American Institute of Physics.}
Country of PublicationUnited States
LanguageEnglish
Formatpp. 399-406 ; PL:
System Entry Date2001 May 04

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