Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group

被引：9

作者：

Tichai, A. ^{[1
,2
,3
]}

Kapas, K. ^{[4
,5
]}

Miyagi, T. ^{[1
,2
,4
,5
,6
]}

Werner, M. A. ^{[5
,7
]}

Legeza, Oe. ^{[8
]}

Schwenk, A. ^{[1
,2
,3
]}

Zarand, G. ^{[7
]}

机构：

[1] Tech Univ Darmstadt, Dept Phys, D-64289 Darmstadt, Germany

[2] GSI Helmholtzzentrum Schwerionenforsch GmbH, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany

[3] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[4] Wigner Res Ctr Phys, POB 49, H-1525 Budapest, Hungary

[5] Budapest Univ Technol & Econ, Inst Phys, Dept Theoret Phys, Muegyetem Rkp 3, H-1111 Budapest, Hungary

[6] Univ Tsukuba, Ctr Computat Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058577, Japan

[7] Budapest Univ Technol & Econ, HUN REN BME Quantum Dynam & Correlat Res Grp, Muegyetem Rkp 3, H-1111 Budapest, Hungary

[8] Tech Univ Munich, Inst Adv Study, Lichtenbergstr 2a, D-85748 Garching, Germany

来源：

PHYSICS LETTERS B | 2024年 / 855卷

关键词：

BODY PERTURBATION-THEORY; SHELL-MODEL; NUCLEI;

D O I：

10.1016/j.physletb.2024.138841

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：6

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