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Title: How Many-Body Correlations and α Clustering Shape He 6

The Borromean 6He nucleus is an exotic system characterized by two halo neutrons orbiting around a compact 4He (or α) core, in which the binary subsystems are unbound. The simultaneous reproduction of its small binding energy and extended matter and point-proton radii has been a challenge for ab initio theoretical calculations based on traditional bound-state methods. Using soft nucleon-nucleon interactions based on chiral effective field theory potentials, we show that supplementing the model space with 4He + n + n cluster degrees of freedom largely solves this issue. Lastly, we analyze the role played by α clustering and many-body correlations, and study the dependence of the energy spectrum on the resolution scale of the interaction.
Authors:
 [1] ;  [1] ;  [2] ;  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. TRIUMF, Vancouver, BC (Canada)
  3. Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)
Publication Date:
Report Number(s):
LLNL-JRNL-693078
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:
AC52-07NA27344; 401945-2011; SAPIN-2016-00033
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 22; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1376032
Alternate Identifier(s):
OSTI ID: 1333340

Romero-Redondo, Carolina, Quaglioni, Sofia, Navrátil, Petr, and Hupin, Guillaume. How Many-Body Correlations and α Clustering Shape He6. United States: N. p., Web. doi:10.1103/PhysRevLett.117.222501.
Romero-Redondo, Carolina, Quaglioni, Sofia, Navrátil, Petr, & Hupin, Guillaume. How Many-Body Correlations and α Clustering Shape He6. United States. doi:10.1103/PhysRevLett.117.222501.
Romero-Redondo, Carolina, Quaglioni, Sofia, Navrátil, Petr, and Hupin, Guillaume. 2016. "How Many-Body Correlations and α Clustering Shape He6". United States. doi:10.1103/PhysRevLett.117.222501. https://www.osti.gov/servlets/purl/1376032.
@article{osti_1376032,
title = {How Many-Body Correlations and α Clustering Shape He6},
author = {Romero-Redondo, Carolina and Quaglioni, Sofia and Navrátil, Petr and Hupin, Guillaume},
abstractNote = {The Borromean 6He nucleus is an exotic system characterized by two halo neutrons orbiting around a compact 4He (or α) core, in which the binary subsystems are unbound. The simultaneous reproduction of its small binding energy and extended matter and point-proton radii has been a challenge for ab initio theoretical calculations based on traditional bound-state methods. Using soft nucleon-nucleon interactions based on chiral effective field theory potentials, we show that supplementing the model space with 4He + n + n cluster degrees of freedom largely solves this issue. Lastly, we analyze the role played by α clustering and many-body correlations, and study the dependence of the energy spectrum on the resolution scale of the interaction.},
doi = {10.1103/PhysRevLett.117.222501},
journal = {Physical Review Letters},
number = 22,
volume = 117,
place = {United States},
year = {2016},
month = {11}
}