2017/09/30 by Diego Lonardoni, D. Lonardoni, J. Carlson +7 · 110 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Cutoff #Monte Carlo method #Nuclear physics research studies #Nucleon #Operator (biology) #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum Monte Carlo #Quantum mechanics #Scattering #Statistics #nucl-th
paper · pdf · doi:10.1103/physrevlett.120.122502
published in Physical Review Letters 120(12), 122502 (American Physical Society) · 6 pages, 4 figures
openalex created_date 2017/10/06 · openalex publication_date 2018/03/22 · arxiv created 2018/03/28 · arxiv updated 2018/03/29 · openalex updated_date 2026/08/06
We report accurate quantum Monte Carlo calculations of nuclei up to A=16 based on local chiral two- and three-nucleon interactions up to next-to-next-to-leading order. We examine the theoretical uncertainties associated with the chiral expansion and the cutoff in the theory, as well as the associated operator choices in the three-nucleon interactions. While in light nuclei the cutoff variation and systematic uncertainties are rather small, in 16O these can be significant for large coordinate-space cutoffs. Overall, we show that chiral interactions constructed to reproduce properties of very light systems and nucleon-nucleon scattering give an excellent description of binding energies, charge radii, and form factors for all these nuclei, including open-shell systems in A=6 and 12.