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

被引：52
作者：
Bansal, A. [1 ]
Binder, S. [1 ,2 ]
Ekstrom, A. [2 ,3 ]
Hagen, G. [1 ,2 ]
Jansen, G. R. [2 ,4 ]
Papenbrock, T. [1 ,2 ]
机构：
[1] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[2] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA
[3] Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden
[4] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA
来源：
PHYSICAL REVIEW C | 2018年 / 98卷 / 05期
基金：
瑞典研究理事会;
关键词：
VOLUME DEPENDENCE; 3-BOSON SYSTEM; SHELL-MODEL; SCATTERING; FORCES; RENORMALIZATION; CONSTANTS; PROTON; STATES; HE-4;
D O I：
10.1103/PhysRevC.98.054301
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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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页数：26
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