4.5 Article

Pion-less effective field theory for atomic nuclei and lattice nuclei

期刊

PHYSICAL REVIEW C
卷 98, 期 5, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.98.054301

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资金

  1. US Department of Energy, Office of Science, Office of Nuclear Physics [DE-FG02-96ER40963, DE-SC0008499, DE-SC0018223]
  2. Field Work Proposal ERKBP57 at Oak Ridge National Laboratory (ORNL)
  3. Swedish Research Council [201500225]
  4. Marie Sklodowska Curie Actions [INCA 600398]
  5. Alexander-von-Humboldt Foundation (Feodor-Lynen fellowship)
  6. US Department of Energy [DE-AC05-00OR22725]
  7. United States Government
  8. Leadership Computing Facility at ORNL [DEAC05-00OR22725]

向作者/读者索取更多资源

We compute the medium-mass nuclei O-16 and Ca-40 using pion-less effective field theory (EFT) at next-to-leading order (NLO). The low-energy coefficients of the EFT Hamiltonian are adjusted to experimental data for nuclei with mass numbers A = 2 and 3, or alternatively to results from lattice quantum chromodynamics at an unphysical pion mass of 806 MeV. The EFT is implemented through a discrete variable representation in the harmonic oscillator basis. This approach ensures rapid convergence with respect to the size of the model space and facilitates the computation of medium-mass nuclei. At NLO the nuclei O-16 and Ca-40 are bound with respect to decay into alpha particles. Binding energies per nucleon are 9-10 MeV and 21-40 MeV at pion masses of 140 and 806 MeV, respectively.

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