Ab initio single-neutron spectroscopic overlaps in lithium isotopes

Abstract

We calculate single-neutron spectroscopic overlaps for lithium isotopes in the framework of the \textit{ab initio} symmetry-adapted no-core shell model. We report the associated neutron-nucleus asymptotic normalization coefficients (ANCs) and spectroscopic factors (SFs) that are important ingredients in many reaction cross section calculations. While spectroscopic factors have been traditionally extracted from experimental cross sections, their sensitivity on the type of reactions, energy, and the underlying models point to the need for determining SF from first-principle structure considerations. As illustrative examples, we present ${}^6$Li+n, ${}^7$Li+n, and ${}^8$Li+n, and we show that the results are in a good agreement with those of other \textit{ab initio} methods, where available, including the quantum Monte Carlo approach. We compare ANCs and SFs to available experimentally deduced values, with a view toward expanding this study to heavier nuclei and to extracting inter-cluster effective interactions for input into analyses of existing and future experimental data.

arXiv comment10 pages, 8 figures

References in corpus (34)

• Properties of ${}^{12}$C in the {\it ab initio} nuclear shell-model
• The R-matrix theory
• An optimized chiral nucleon-nucleon interaction at next-to-next-to-leading order
• Ab initio no-core full configuration calculations of light nuclei
• Ab initio many-body calculations of nucleon-nucleus scattering
• Ab initio description of the exotic unbound 7He nucleus
• Symmetry-guided large-scale shell-model theory
• An Alternative Parameterization of R-matrix Theory
• Quenching of single-particle strength from direct reactions with stable and rare-isotope beams
• Quantum Monte Carlo calculations of spectroscopic overlaps in $A\le 7$ nuclei
• Physics of nuclei: Key role of an emergent symmetry
• Optical potential from first principles
• Ab initio optical potentials and nucleon scattering on medium mass nuclei
• Asymptotic normalization coefficients from ab initio calculations
• Asymptotic normalization coefficients for 8B->7Be+p from a study of 8Li->7Li+n
• Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg
• Nuclear Dynamics and Reactions in the Ab Initio Symmetry-Adapted Framework
• Cluster form factor calculation in the ab initio no-core shell model
• Microscopic positive-energy potential based on Gogny interaction
• Ab initio Folding Potentials for Nucleon-Nucleus Scattering based on NCSM One-Body Densities
• 7Be(p,gamma)8B S-factor from ab initio no-core shell model wave functions
• Efficacy of the SU(3) scheme for ab initio large-scale calculations beyond the lightest nuclei
• Alpha clustering and alpha-capture reaction rate from ab initio symmetry-adapted description of ${}^{20}$Ne
• The 8Li(d,p)9Li Reaction and the Astrophysical 8Li(n,g)9Li Reaction Rate
• Ab initio Leading Order Effective Potentials for Elastic Nucleon-Nucleus Scattering
• Isospin symmetry in $B(E2)$ values: Coulomb excitation study of ${}^{21}$Mg
• Proton elastic scattering on calcium isotopes from chiral nuclear optical potentials
• Benchmark calculations of electromagnetic sum rules with a symmetry-adapted basis and hyperspherical harmonics
• Electron-scattering form factors for 6Li in the ab initio symmetry-guided framework
• Neutron spectroscopic factors of 7Li and astrophysical 6Li(n,g)7Li reaction rates
• Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
• Description of alpha-clustering of 8Be nucleus states in high-precision theoretical approach
• Neutron-deuteron scattering cross-sections with chiral $NN$ interactions using wave-packet continuum discretization
• Merging ab initio theory and few-body approach for $(d,p)$ reactions

Cited by in corpus (2)

• Ab initio informed 20Ne(p, p$\alpha$)16O reaction elucidates the emergence of alpha clustering from chiral potentials
• Microscopic optical potentials from a Greens function approach