Threecluster dynamics within the ab initio nocore shell model with continuum: How manybody correlations and $\alpha $ clustering shape ${}^{6}\mathrm{He}$ [ThreeCluster Dynamics Within The Ab Initio NoCore Shell Model With Continuum: How ManyBody Correlations And AlphaClustering Shape 6He]
Abstract
We realize the treatment of bound and continuum nuclear systems in the proximity of a threebody breakup threshold within the ab initio framework of the nocore shell model with continuum. Manybody eigenstates obtained from the diagonalization of the Hamiltonian within the harmonicoscillator expansion of the nocore shell model are coupled with continuous microscopic threecluster states to correctly describe the nuclear wave function both in the interior and asymptotic regions. We discuss the formalism in detail and give algebraic expressions for the case of core + n + n systems. Using similarityrenormalizationgroup evolved nucleonnucleon interactions, we analyze the role of ^{4}He + n + n clustering and manybody correlations in the ground and lowlying continuum states of the Borromean ^{6}He nucleus, and study the dependence of the energy spectrum on the resolution scale of the interaction. We show that ^{6}He small binding energy and extended radii compatible with experiment can be obtained simultaneously, without resorting to extrapolations. Here, we also find that a significant portion of the groundstate energy and the narrow width of the first 2^{+} resonance stem from manybody correlations that can be interpreted as coreexcitation effects.
 Authors:

 Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
 TRIUMF, Vancouver, BC (Canada)
 Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France). DAM
 Publication Date:
 Research Org.:
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA)
 OSTI Identifier:
 1512595
 Alternate Identifier(s):
 OSTI ID: 1430565
 Report Number(s):
 LLNLJRNL739751
Journal ID: ISSN 24699985; PRVCAN; 893623
 Grant/Contract Number:
 AC5207NA27344; SCW1158; SCW0498
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Physical Review C
 Additional Journal Information:
 Journal Volume: 97; Journal Issue: 3; Journal ID: ISSN 24699985
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Quaglioni, Sofia, RomeroRedondo, Carolina, Navrátil, Petr, and Hupin, Guillaume. Threecluster dynamics within the ab initio nocore shell model with continuum: How manybody correlations and α clustering shape He6 [ThreeCluster Dynamics Within The Ab Initio NoCore Shell Model With Continuum: How ManyBody Correlations And AlphaClustering Shape 6He]. United States: N. p., 2018.
Web. doi:10.1103/PhysRevC.97.034332.
Quaglioni, Sofia, RomeroRedondo, Carolina, Navrátil, Petr, & Hupin, Guillaume. Threecluster dynamics within the ab initio nocore shell model with continuum: How manybody correlations and α clustering shape He6 [ThreeCluster Dynamics Within The Ab Initio NoCore Shell Model With Continuum: How ManyBody Correlations And AlphaClustering Shape 6He]. United States. doi:https://doi.org/10.1103/PhysRevC.97.034332
Quaglioni, Sofia, RomeroRedondo, Carolina, Navrátil, Petr, and Hupin, Guillaume. Fri .
"Threecluster dynamics within the ab initio nocore shell model with continuum: How manybody correlations and α clustering shape He6 [ThreeCluster Dynamics Within The Ab Initio NoCore Shell Model With Continuum: How ManyBody Correlations And AlphaClustering Shape 6He]". United States. doi:https://doi.org/10.1103/PhysRevC.97.034332. https://www.osti.gov/servlets/purl/1512595.
@article{osti_1512595,
title = {Threecluster dynamics within the ab initio nocore shell model with continuum: How manybody correlations and α clustering shape He6 [ThreeCluster Dynamics Within The Ab Initio NoCore Shell Model With Continuum: How ManyBody Correlations And AlphaClustering Shape 6He]},
author = {Quaglioni, Sofia and RomeroRedondo, Carolina and Navrátil, Petr and Hupin, Guillaume},
abstractNote = {We realize the treatment of bound and continuum nuclear systems in the proximity of a threebody breakup threshold within the ab initio framework of the nocore shell model with continuum. Manybody eigenstates obtained from the diagonalization of the Hamiltonian within the harmonicoscillator expansion of the nocore shell model are coupled with continuous microscopic threecluster states to correctly describe the nuclear wave function both in the interior and asymptotic regions. We discuss the formalism in detail and give algebraic expressions for the case of core + n + n systems. Using similarityrenormalizationgroup evolved nucleonnucleon interactions, we analyze the role of 4He + n + n clustering and manybody correlations in the ground and lowlying continuum states of the Borromean 6He nucleus, and study the dependence of the energy spectrum on the resolution scale of the interaction. We show that 6He small binding energy and extended radii compatible with experiment can be obtained simultaneously, without resorting to extrapolations. Here, we also find that a significant portion of the groundstate energy and the narrow width of the first 2+ resonance stem from manybody correlations that can be interpreted as coreexcitation effects.},
doi = {10.1103/PhysRevC.97.034332},
journal = {Physical Review C},
number = 3,
volume = 97,
place = {United States},
year = {2018},
month = {3}
}
Web of Science
Figures / Tables:
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Figures / Tables found in this record: