تقرير
Combining the in-medium similarity renormalization group with the density matrix renormalization group: Shell structure and information entropy
| العنوان: | Combining the in-medium similarity renormalization group with the density matrix renormalization group: Shell structure and information entropy |
|---|---|
| المؤلفون: | Tichai, A., Knecht, S., Kruppa, A. T., Legeza, Ö., Moca, C. P., Schwenk, A., Werner, M. A., Zarand, G. |
| المصدر: | Phys. Lett. B 845, 138139 (2023) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter Nuclear Theory Quantum Physics |
| مصطلحات موضوعية: | Nuclear Theory, Condensed Matter - Strongly Correlated Electrons, Quantum Physics |
| الوصف: | We propose a novel many-body framework combining the density matrix renormalization group (DMRG) with the valence-space (VS) formulation of the in-medium similarity renormalization group. This hybrid scheme admits for favorable computational scaling in large-space calculations compared to direct diagonalization. The capacity of the VS-DMRG approach is highlighted in ab initio calculations of neutron-rich nickel isotopes based on chiral two- and three-nucleon interactions, and allows us to perform converged ab initio computations of ground and excited state energies. We also study orbital entanglement in the VS-DMRG, and investigate nuclear correlation effects in oxygen, neon, and magnesium isotopes. The explored entanglement measures reveal nuclear shell closures as well as pairing correlations. Comment: 5 pages, 4 Figures, version published at Phys. Lett. B |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2023.138139 |
| URL الوصول: | http://arxiv.org/abs/2207.01438 |
| رقم الأكسشن: | edsarx.2207.01438 |
| قاعدة البيانات: | arXiv |
كن أول من يترك تعليقا!