一个用于时变太阳中微子通量的高精度数值框架，对全球地下实验室进行全地球物质振荡校正
A High-Precision Numerical Framework for Time-Varying Solar Neutrino Flux with Full Earth Matter Oscillation Corrections for Global Underground Laboratories
AI总结：
本文针对当代高精度太阳中微子测量需求，提出统一高效框架，纳入时变日地距离、不同维度地球物质效应及快速MSW形式，实现大规模扫描，给出中国锦屏等地下实验室的特定地点中微子通量预测。
AI中文摘要：
太阳中微子已被研究半个多世纪，用于检验标准太阳模型和粒子物理标准模型的电弱部分。当代实验进入高精度测量时代，需要亚百分比精度的理论预测。本文识别并分析了高保真计算太阳中微子通量所需的关键物理和计算组件，提出了一个统一且计算高效的框架。该框架包含：时变日地距离；用一维和三维地球电子密度剖面模拟的地球物质效应；基于Strang分裂的快速米赫耶夫 - 斯米尔诺夫 - 沃尔芬斯坦（MSW）中微子传播形式，可在中微子轨迹和能量网格上进行快速大规模扫描。我们给出了中国锦屏地下实验室（CJPL）和其他积极参与太阳中微子项目的地下实验室的特定地点预测。
英文摘要：
Solar neutrinos have been studied for over half a century to test both the Standard Solar Model and the electroweak sector of the Standard Model of particle physics. Contemporary experiments are now entering an era of high-precision measurements, demanding corresponding theoretical predictions with sub-percent accuracy to enable meaningful comparison. In this paper, we identify and analyze the essential physical and computational components required to compute solar neutrino fluxes with high fidelity, and present a unified, computationally efficient framework. This framework incorporates: (i) the time-varying Earth-Sun distance; (ii) Earth matter effects modeled using both one-dimensional (1D) and three-dimensional (3D) Earth electron-density profiles; and (iii) a fast, Strang-splitting-based implementation of the Mikheyev-Smirnov-Wolfenstein (MSW) neutrino propagation formalism, enabling rapid, large-scale scans over neutrino trajectories and energy grids. We deliver site-specific predictions for the China Jinping Underground Laboratory (CJPL) and other underground laboratories actively engaged in solar neutrino programs.
