Halo Structures in p-Shell Hypernuclei with Natural Orbitals
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866914208594001920 |
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| author | Knöll, Marco Roth, Robert |
| author_facet | Knöll, Marco Roth, Robert |
| contents | We extend the concept of natural orbitals as an optimized single-particle basis for ab initio nuclear many-body calculations to hypernuclei and show that their superior properties, in particular accelerated convergence and independence of the underlying harmonic-oscillator frequency, can be directly transferred to the hypernuclear regime as demonstrated in no-core shell model calculations for selected p-shell hypernuclei. Moreover, the radial single-particle wavefunctions associated with the natural-orbital basis yield important structural information with respect to the different particle species allowing us to identify a hyperon halo in ΛHe5. We further explore nucleonic and hyperonic halo structures in A=6 and A=7 singly-strange hypernuclei based on one-body densities and point-particle radii obtained from no-core shell model calculations with realistic interactions from chiral effective field theory. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2501_08013 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Halo Structures in p-Shell Hypernuclei with Natural Orbitals Knöll, Marco Roth, Robert Nuclear Theory We extend the concept of natural orbitals as an optimized single-particle basis for ab initio nuclear many-body calculations to hypernuclei and show that their superior properties, in particular accelerated convergence and independence of the underlying harmonic-oscillator frequency, can be directly transferred to the hypernuclear regime as demonstrated in no-core shell model calculations for selected p-shell hypernuclei. Moreover, the radial single-particle wavefunctions associated with the natural-orbital basis yield important structural information with respect to the different particle species allowing us to identify a hyperon halo in ΛHe5. We further explore nucleonic and hyperonic halo structures in A=6 and A=7 singly-strange hypernuclei based on one-body densities and point-particle radii obtained from no-core shell model calculations with realistic interactions from chiral effective field theory. |
| title | Halo Structures in p-Shell Hypernuclei with Natural Orbitals |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2501.08013 |