论文标题
从结合能中量化光核中的α聚类
Quantifying alpha clustering in light nuclei from binding energies
论文作者
论文摘要
核聚类的起源是什么？它如何从核相互作用中产生？尽管有足够的实验证据证明了这种现象，但其理论表征直接来自核子，因为自由度仍然是一个挑战，因此很难使用聚类可观察到的可观察力来改善核力量。在这项工作中，提出了基于有效规模参数的简单比率，以评估界限和狭窄的地下核中核力量（$ {{}^{4} \ text {he}} $）上核力量的质量。所提出的聚类比不含参数，并正确识别光核中的基本α聚类特征。发现在核中，从$ {{}^{6} {} \ text {li}} $到$ {{} {}^{14} \ text {c}} $，最先进的textit \ textIt \ textit {ab initio {ab initio}核力量，核力量不足以使$ unpha compustry of pey unpha compustry compuns compustry compuns compustry compuns compustry inpha unpla {}^{8} \ text {be}} $和$ {{}^{12} \ text {c}} $。然后，通过使用平行的马尔可夫链蒙特卡洛算法对实验聚类比率进行10 \％的相对不确定性，将对结合能的严格约束。证明了核$^{6,7} $ li，$^7 $ be，$^{10,11} $ b，以及$^{11} $ c的结合能，需要通过核力量在数十KEV PROCIS中获得核力量，以确保在Light Nutuclei中适当地对基本的Alpha Clustering Promoduction。这项研究提供了一种新的实用途径，以指导对中质核的潜在影响的核力量的未来优化。
What is the origin of nuclear clustering and how does it emerge from the nuclear interaction? While there is ample experimental evidence for this phenomenon, its theoretical characterization directly from nucleons as degrees of freedom remains a challenge, making it difficult to improve nuclear forces using clustering observables. In this work, a simple ratio of energies based on effective scale arguments is proposed to assess the quality of nuclear forces on alpha clustering (${ {}^{4}\text{He} }$) in bound and narrow ground-state nuclei. The proposed clustering ratio is parameter-free and correctly identify basic alpha clustering features in light nuclei. It is found that in nuclei ranging from ${ {}^{6}\text{Li} }$ to ${ {}^{14}\text{C} }$, state-of-the-art \textit{ab initio} nuclear forces underestimate the degree of alpha clustering in key nuclei such as ${ {}^{8}\text{Be} }$ and ${ {}^{12}\text{C} }$. Stringent constraints on binding energies are then provided by back-propagating 10\% relative uncertainties on the experimental clustering ratios using a parallel Markov chain Monte Carlo algorithm. It is demonstrated that the binding energies of the nuclei $^{6,7}$Li, $^7$Be, $^{10,11}$B, and $^{11}$C need to be obtained within tens of keV precision by nuclear forces to ensure a proper reproduction of basic alpha clustering features in light nuclei. This study provides a new and practical path to guide future optimizations of nuclear forces with a potential impact for medium-mass nuclei.
