Geometric structure of two-neutron halo nuclei from Efimov physics at the unitary limit

IF 1.2 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Few-Body Systems Pub Date : 2026-07-15 DOI:10.1007/s00601-026-02065-4

R. M. Francisco, D. S. Rosa, T. Frederico, M. T. Yamashita

引用次数: 0

Abstract

We investigate the geometric structure of two-neutron halo nuclei from the perspective of Efimov physics. Using the analytic three-body wave function obtained from the Faddeev equations in the unitary limit, we explore the connection between Efimov universality and the spatial configuration of these weakly bound systems. The internal geometry is quantified through probability densities, root-mean-square interparticle distances and characteristic opening angles, evaluated for different neutron–core mass ratios. Our results reveal a universal trend in the geometry of s-wave dominated halo nuclei, reflecting the universal correlations characteristic of the Efimov-like regime.

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叶菲莫夫物理在酉极限下的双中子晕核几何结构

从叶菲莫夫物理的角度研究了双中子晕核的几何结构。利用在酉极限下由Faddeev方程得到的解析三体波函数，探讨了Efimov普适性与这些弱界系统的空间构型之间的联系。内部几何通过概率密度、均方根粒子间距离和特征开口角来量化，并对不同的中子核质量比进行评估。我们的结果揭示了s波主导的晕核几何结构的普遍趋势，反映了类叶菲莫夫体系的普遍相关特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Few-Body Systems 物理-物理：综合

CiteScore

2.90

自引率

18.80%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Few-Body Systems presents original research work – experimental, theoretical and computational – investigating the behavior of any classical or quantum system consisting of a small number of well-defined constituent structures. The focus is on the research methods, properties, and results characteristic of few-body systems. Examples of few-body systems range from few-quark states, light nuclear and hadronic systems; few-electron atomic systems and small molecules; and specific systems in condensed matter and surface physics (such as quantum dots and highly correlated trapped systems), up to and including large-scale celestial structures. Systems for which an equivalent one-body description is available or can be designed, and large systems for which specific many-body methods are needed are outside the scope of the journal. The journal is devoted to the publication of all aspects of few-body systems research and applications. While concentrating on few-body systems well-suited to rigorous solutions, the journal also encourages interdisciplinary contributions that foster common approaches and insights, introduce and benchmark the use of novel tools (e.g. machine learning) and develop relevant applications (e.g. few-body aspects in quantum technologies).