Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group
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arXiv
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| Hauptverfasser: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910560641089536 |
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| author | Tichai, A. Kapás, K. Miyagi, T. Werner, M. A. Legeza, Ö. Schwenk, A. Zarand, G. |
| author_facet | Tichai, A. Kapás, K. Miyagi, T. Werner, M. A. Legeza, Ö. Schwenk, A. Zarand, G. |
| contents | The recently proposed combination of the valence-space in-medium similarity renormalization group (VS-IMSRG) with the density matrix renormalization group (DMRG) offers a scalable and flexible many-body approach for strongly correlated open-shell nuclei. We use the VS-DMRG to investigate the low-lying spectroscopy of N=50 isotones, which are characteristic for their transition between single-particle and collective excitations. We also study electromagnetic transitions and show the advantage of the VS-DMRG to capture the underlying physics more efficiently, with significantly improved convergence compared to state-of-the-art shell-model truncations. Combined with an analysis of quantum information measures, this further establishes the VS-DMRG as a valuable method for ab initio calculations of nuclei. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_18723 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group Tichai, A. Kapás, K. Miyagi, T. Werner, M. A. Legeza, Ö. Schwenk, A. Zarand, G. Nuclear Theory Strongly Correlated Electrons The recently proposed combination of the valence-space in-medium similarity renormalization group (VS-IMSRG) with the density matrix renormalization group (DMRG) offers a scalable and flexible many-body approach for strongly correlated open-shell nuclei. We use the VS-DMRG to investigate the low-lying spectroscopy of N=50 isotones, which are characteristic for their transition between single-particle and collective excitations. We also study electromagnetic transitions and show the advantage of the VS-DMRG to capture the underlying physics more efficiently, with significantly improved convergence compared to state-of-the-art shell-model truncations. Combined with an analysis of quantum information measures, this further establishes the VS-DMRG as a valuable method for ab initio calculations of nuclei. |
| title | Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group |
| topic | Nuclear Theory Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2402.18723 |