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.

引用

页数：26

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