Ab initio calculations of p-shell nuclei up to N2LO in chiral Effective Field Theory

Abstract

Nuclear structure and reaction theory are undergoing a major renaissance with advances in many-body methods, realistic interactions with greatly improved links to Quantum Chromodynamics, the advent of high performance computing, and improved computational algorithms. State-of-the-art two- and three-nucleon interactions obtained from chiral Effective Field Theory provide a theoretical foundation for nuclear theory with controlled approximations. With highly efficient numerical codes, tuned to the current generation of supercomputers, we can perform ab-initio nuclear structure calculations for a range of nuclei to a remarkable level of numerical accuracy, with quantifiable numerical uncertainties. Here we present an overview of recent results for No-Core Configuration Interaction calculations of p-shell nuclei using these chiral interactions up to next-to-next-to-leading order, including three-body forces. We show the dependence of the ground state energies on the chiral order; we also present excitation spectra for selected nuclei and compare the results with experimental data.

10 pages, to appear in the proceedings of the XLI Brazilian Meeting on Nuclear Physics, Maresias SP, Brazil, Sept. 2018

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• Chiral effective field theory and nuclear forces
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Cited by in corpus (2)

• Light nuclei with semilocal momentum-space regularized chiral interactions up to third order
• Ab-initio no-core shell model study of ${}^{10-14}$B isotopes with realistic NN interactions