How Many-Body Correlations and α Clustering Shape He6

Romero-Redondo, Carolina; Quaglioni, Sofia; Navrátil, Petr; Hupin, Guillaume

doi:10.1103/PhysRevLett.117.222501

Title: How Many-Body Correlations and $α$ Clustering Shape ${}^{6}{He}$

Journal Article · Wed Nov 23 00:00:00 EST 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.117.222501· OSTI ID:1376032

Romero-Redondo, Carolina ^[1]; Quaglioni, Sofia ^[1]; Navrátil, Petr ^[2]; Hupin, Guillaume ^[3]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
TRIUMF, Vancouver, BC (Canada)
Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)

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.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC52-07NA27344; 401945-2011; SAPIN-2016-00033

OSTI ID:: 1376032

Alternate ID(s):: OSTI ID: 1333340

Report Number(s):: LLNL-JRNL-693078; PRLTAO

Journal Information:: Physical Review Letters, Vol. 117, Issue 22; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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