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arXiv · 1906.03703

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

Pieter Maris
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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.

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Pieter Maris. 2019-06-09. Ab initio calculations of p-shell nuclei up to N2LO in chiral Effective Field Theory. https://doi.org/10.1088/1742-6596/1291/1/012005

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