发表机构
Johannes Gutenberg-Universität Mainz; Institut für Kernphysik; PRISMA++ Cluster of Excellence; Università degli Studi di Milano; Dipartimento di Fisica “Aldo Pontremoli”; INFN, Sezione di Milano（美因茨约翰内斯·古腾堡大学; 核物理研究所; PRISMA++卓越集群; 米兰大学; 阿尔多·蓬特莫利物理系; 意大利国家核物理研究所米兰分部）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文利用非微扰Gorkov代数图式构造方法，对中子星内壳层的中子物质进行从头算研究，统一描述其状态方程和谱函数，识别超流特征并量化配对能隙，为探索电弱过程奠定基础。
AI 中文摘要
在中子星内壳层所遇到的低密度条件下，中子物质会变为超流体，直接影响恒星冷却等宏观现象。然而，由于不受控的多体近似，对该系统的精确定量理解一直受到阻碍。在本快报中，我们利用非微扰的Gorkov代数图式构造方法，对均匀中子物质从稀薄区域到饱和密度的状态方程和单粒子谱函数提供了统一的从头算描述。我们在激发谱中识别出超流性的清晰微观特征，并量化了与真实手征哈密顿量相关的配对能隙，首次估计了它们对多体截断的敏感性。我们对动力学关联和配对关联的稳健处理，为探索与中子星相关的各种区域中的电弱过程铺平了道路。
英文摘要
At the low densities encountered in the inner crust of neutron stars, neutron matter becomes superfluid, directly influencing macroscopic phenomena such as star cooling. However, a precise quantitative understanding of this system has been hindered by uncontrolled many-body approximations. In this letter, we exploit the nonperturbative Gorkov algebraic diagrammatic construction method to provide a unified ab initio description of the equation of state and the single-particle spectral functions of homogeneous neutron matter, spanning from the dilute regime to saturation density. We identify clear microscopic signatures of superfluidity in the excitation spectrum and quantify the pairing gaps associated with realistic chiral Hamiltonians, estimating for the first time their sensitivity to the many-body truncation. Our robust handling of both dynamical and pairing correlations paves the way for exploring electroweak processes across the regimes relevant to neutron stars.
