Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group
Abstract
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.
Keywords
Cite
@article{arxiv.2402.18723,
title = {Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group},
author = {A. Tichai and K. Kapás and T. Miyagi and M. A. Werner and Ö. Legeza and A. Schwenk and G. Zarand},
journal= {arXiv preprint arXiv:2402.18723},
year = {2024}
}
Comments
7 pages, 4 figures, version published at Phys. Lett. B