基准测试\(\mathbf {\Lambda }\)神经网络三体力和\(A=3-5\)超核的首次预测

IF 2.6 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

The European Physical Journal A Pub Date : 2025-02-01 DOI:10.1140/epja/s10050-024-01474-5

Hoai Le, Johann Haidenbauer, Hiroyuki Kamada, Michio Kohno, Ulf-G. Meißner, Kazuya Miyagawa, Andreas Nogga

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引用次数: 0

摘要

Petschauer等人（Phys Rev C93:014001, 2016）推导了主要的手性超子-核子-核子三体力的显式表达式。将这些三体力包括在少体和多体计算中的一个重要先决条件是它们的部分波分解的准确性和效率。提出了\(\Lambda \)神经网络潜在矩阵元素的仔细基准，使用两种鲁棒且有效的部分波分解方法进行计算。此外，报道了\({\Lambda }\)神经网络力对\(A=3-5\)超核分离能贡献的首次定量评估结果。

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Benchmarking \(\mathbf {\Lambda }\)NN three-body forces and first predictions for \(A=3-5\) hypernuclei

Explicit expressions for the leading chiral hyperon-nucleon-nucleon three-body forces have been derived by Petschauer et al (Phys Rev C93:014001, 2016). An important prerequisite for including these three-body forces in few- and many-body calculations is the accuracy and efficiency of their partial-wave decomposition. A careful benchmark of the \(\Lambda \)NN potential matrix elements, computed using two robust and efficient partial-wave decomposition methods, is presented. In addition, results of a first quantitative assessment for the contributions of \({\Lambda }\)NN forces to the separation energies in \(A=3-5\) hypernuclei are reported.

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来源期刊

The European Physical Journal A 物理-物理：核物理

CiteScore

5.00

自引率

18.50%

发文量

216

审稿时长

3-8 weeks

期刊介绍： Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.