Neutron Drip Line in Calcium Isotopes from a Chiral Interaction
Artikel i vetenskaplig tidskrift, 2026
Interactions derived from effective field theories of quantum chromodynamics have thus far failed to bind calcium nuclei beyond neutron number N=40, while nuclear density functionals typically place the neutron drip line near ^70Ca, at N=50. We present the chiral interaction N^3LO_Texas, a combination of two- and three-nucleon potentials at fourth and third chiral order, respectively, with low-energy constants optimized using emulator-accelerated fits to few- and many-body data. This interaction accurately reproduces binding energies and charge radii of key nuclei with mass number A=3 to 208, important excited states, and nuclear matter near saturation. Using ab initio methods, coupled cluster and valence-space in-medium similarity renormalization group, we find that the calcium two-neutron drip line extends to ^71Ca.
Författare
B. S. Hu
Peking University
Oak Ridge National Laboratory
Texas A&M University
Andreas Ekström
Chalmers, Fysik, Subatomär, högenergi- och plasmafysik
Christian Forssén
Chalmers, Fysik, Subatomär, högenergi- och plasmafysik
G. Hagen
University of Tennessee
Oak Ridge National Laboratory
Weiguang Jiang
Johannes Gutenberg-Universität Mainz
T. Miyagi
University of Tsukuba
T. Papenbrock
Oak Ridge National Laboratory
University of Tennessee
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 137 14 142502Ämneskategorier (SSIF 2025)
Subatomär fysik
DOI
10.1103/pz1t-q6v1