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Light neutron-rich hypernuclei from the importance-truncated no-core shell model

Wirth, Roland ; Roth, Robert (2022)
Light neutron-rich hypernuclei from the importance-truncated no-core shell model.
In: Physics Letters B, 2018, 779
doi: 10.26083/tuprints-00012726
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Light neutron-rich hypernuclei from the importance-truncated no-core shell model
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2018
Publisher: Elsevier
Journal or Publication Title: Physics Letters B
Volume of the journal: 779
DOI: 10.26083/tuprints-00012726
Corresponding Links:
Origin: Secondary publication

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.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-127268
Additional Information:

Keywords: Hypernuclei; Ab-initio methods; Neutron-rich nuclei; Neutron separation energies; Neutron drip line

Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 24 Mar 2022 13:24
Last Modified: 22 Feb 2023 07:31
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12726
PPN: 505196301
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