Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group
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-lyi...
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| creator | Tichai, A Kapás, K Miyagi, T Werner, M A Legeza, Ö Schwenk, A Zarand, G |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.2402.18723 |
| format | Article |
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| subjects | Nuclei Physics - Nuclear Theory Physics - Strongly Correlated Electrons Quantum phenomena Space density Spectroscopy |
| title | Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group |
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