Ab initio calculations of p-shell nuclei up to (NLO)-L-2 in chiral Effective Field Theory

Autor(es)

Maris, Pieter ; Guimaraes, V ; Genezini, F ; Lubian, J ; Assuncao, M ; Delgado, A ; Trevisan, LA

• Tipo de documento: Artigo Científico
• Fonte: WAKE CONFERENCE 2021; v. 1291, p. 10-pg., 2019-01-01.

Resumo

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. (AU)

• Processo FAPESP: 17/19371-0 - Cálculos Dyson-Schwinger e Bethe-Salpeter no espaço euclideano e de Minkowski em QED e QCD
• Beneficiário: Tobias Frederico
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional