Wirth, Roland ; Roth, Robert (2018)
Light neutron-rich hypernuclei from the importance-truncated no-core shell model.
In: Physics Letters B, 779
doi: 10.1016/j.physletb.2018.02.021
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
We explore the systematics of ground-state and excitation energies in singly-strange hypernuclei throughout the helium and lithium isotopic chains — from ⋀⁵He to ⋀¹¹He and from ⋀⁷Li to ⋀¹²Li — in the ab initio no-core shell model with importance truncation. All calculations are based on two- and threebaryon interaction from chiral effective field theory and we employ a similarity renormalization group transformation consistently up to the three-baryon level to improve the model-space convergence. While the absolute energies of hypernuclear states show a systematic variation with the regulator cutoff of the hyperon–nucleon interaction, the resulting neutron separation energies are very stable and in good agreement with available data for both nucleonic parents and their daughter hypernuclei. We provide predictions for the neutron separation energies and the spectra of neutron-rich hypernuclei that have not yet been observed experimentally. Furthermore, we find that the neutron drip lines in the helium and lithium isotopic chains are not changed by the addition of a hyperon.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Wirth, Roland ; Roth, Robert |
| Art des Eintrags: | Bibliographie |
| Titel: | Light neutron-rich hypernuclei from the importance-truncated no-core shell model |
| Sprache: | Englisch |
| Publikationsjahr: | 2018 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physics Letters B |
| Jahrgang/Volume einer Zeitschrift: | 779 |
| DOI: | 10.1016/j.physletb.2018.02.021 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | We explore the systematics of ground-state and excitation energies in singly-strange hypernuclei throughout the helium and lithium isotopic chains — from ⋀⁵He to ⋀¹¹He and from ⋀⁷Li to ⋀¹²Li — in the ab initio no-core shell model with importance truncation. All calculations are based on two- and threebaryon interaction from chiral effective field theory and we employ a similarity renormalization group transformation consistently up to the three-baryon level to improve the model-space convergence. While the absolute energies of hypernuclear states show a systematic variation with the regulator cutoff of the hyperon–nucleon interaction, the resulting neutron separation energies are very stable and in good agreement with available data for both nucleonic parents and their daughter hypernuclei. We provide predictions for the neutron separation energies and the spectra of neutron-rich hypernuclei that have not yet been observed experimentally. Furthermore, we find that the neutron drip lines in the helium and lithium isotopic chains are not changed by the addition of a hyperon. |
| Zusätzliche Informationen: | Keywords: Hypernuclei; Ab-initio methods; Neutron-rich nuclei; Neutron separation energies; Neutron drip line |
| 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 12:39 |
| Letzte Änderung: | 02 Aug 2024 12:39 |
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| Suche nach Titel in: | TUfind oder in Google |
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Light neutron-rich hypernuclei from the importance-truncated no-core shell model. (deposited 24 Mär 2022 13:24)
- Light neutron-rich hypernuclei from the importance-truncated no-core shell model. (deposited 02 Aug 2024 12:39) [Gegenwärtig angezeigt]
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