Maris, P. ; Le, H. ; Nogga, A. ; Roth, R. ; Vary, J. P. (2023)
Uncertainties in ab initio nuclear structure calculations with chiral interactions.
In: Frontiers in Physics, 11
doi: 10.3389/fphy.2023.1098262
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
We present theoretical ground state energies and their uncertainties for p-shell nuclei obtained from chiral effective field theory internucleon interactions as a function of chiral order, fitted to two- and three-body data only. We apply a Similary Renormalization Group transformation to improve the numerical convergence of the many-body calculations, and discuss both the numerical uncertainties arising from basis truncations and those from omitted induced many-body forces, as well as chiral truncation uncertainties. With complete Next-to-Next-to-Leading (N²LO) order two- and three-body interactions, we find significant overbinding for the ground states in the upper p-shell, but using higher-order two-body potentials, in combination with N²LO three-body forces, our predictions agree with experiment throughout the p-shell to within our combined estimated uncertainties. The uncertainties due to chiral order truncation are noticeably larger than the numerical uncertainties, but they are expected to become comparable to the numerical uncertainties at complete N³LO.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Maris, P. ; Le, H. ; Nogga, A. ; Roth, R. ; Vary, J. P. |
| Art des Eintrags: | Bibliographie |
| Titel: | Uncertainties in ab initio nuclear structure calculations with chiral interactions |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | Darmstadt |
| Verlag: | Frontiers Media S.A. |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Frontiers in Physics |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| Kollation: | 16 Seiten |
| DOI: | 10.3389/fphy.2023.1098262 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We present theoretical ground state energies and their uncertainties for p-shell nuclei obtained from chiral effective field theory internucleon interactions as a function of chiral order, fitted to two- and three-body data only. We apply a Similary Renormalization Group transformation to improve the numerical convergence of the many-body calculations, and discuss both the numerical uncertainties arising from basis truncations and those from omitted induced many-body forces, as well as chiral truncation uncertainties. With complete Next-to-Next-to-Leading (N²LO) order two- and three-body interactions, we find significant overbinding for the ground states in the upper p-shell, but using higher-order two-body potentials, in combination with N²LO three-body forces, our predictions agree with experiment throughout the p-shell to within our combined estimated uncertainties. The uncertainties due to chiral order truncation are noticeably larger than the numerical uncertainties, but they are expected to become comparable to the numerical uncertainties at complete N³LO. |
| Freie Schlagworte: | chiral effective field theory, nucleon-nucleon interactions, three-nucleon interactions, yakubovsky, no-core shell model, uncertainty quantification |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 02 Aug 2024 12:51 |
| Letzte Änderung: | 02 Aug 2024 12:51 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Uncertainties in ab initio nuclear structure calculations with chiral interactions. (deposited 11 Apr 2023 11:49)
- Uncertainties in ab initio nuclear structure calculations with chiral interactions. (deposited 02 Aug 2024 12:51) [Gegenwärtig angezeigt]
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