标题： 化学物质运输和电子屏蔽对太阳模型中日震学和中微子观测的影响 显示英文标题

标题： The impact of the transport of chemicals and electronic screening on helioseismic and neutrino observations in solar models

摘要： 恒星内部化学元素的输运是太阳和恒星建模中最大的不确定性来源之一。 太阳凭借其精美的光谱、日震学和中微子观测，为测试微观和宏观输运过程的假设提供了理想的环境。 我们详细研究了各种原子扩散形式对CLES（Scuflaire等，2008a）和Cesam2k2（Morel和Lebreton 2008；Marques等，2013；Deal等，2018）模型中日震学约束的影响，并详细比较了这两种代码。 此外，由于标准模型使用微观扩散无法再现太阳中轻元素的耗尽（Li，Be），必须引入另一种有效过程来再现这些约束（旋转诱导：Eggenberger等，2022，或对流包层下方的超射——或渗透对流——：Thévenin等，2017，或人为湍流：Lebreton和Maeder 1987；Richer、Michaud和Turcotte 2000）。 然而，引入这种额外的混合会导致CNO中微子通量的问题（见Buldgen等，2023），这些通量似乎系统性地低于Borexino观测结果（Appel等，2022）。 当使模型与中微子通量一致时，另一个需要考虑的关键方面是电子屏蔽的影响（Mussack和Däppen，2011）。 显示英文摘要

摘要： The transport of chemical elements in stellar interiors is one of the greatest sources of uncertainties of solar and stellar modelling. The Sun, with its exquisite spectroscopic, helioseismic and neutrino observations, offers a prime environment to test the prescriptions used for both microscopic and macroscopic transport processes. We study in detail the impact of various formalisms for atomic diffusion on helioseismic constraints in both CLES (Scuflaire et al., 2008a) and Cesam2k2 (Morel and Lebreton 2008; Marques et al. 2013; Deal et al. 2018) models and compare both codes in detail. Moreover, due to the inability of standard models using microscopic diffusion to reproduce light element depletion in the Sun (Li, Be), another efficient process must be included to reproduce these constraints (rotation-induced: Eggenberger et al. 2022, overshooting -- or penetrative convection -- below the convective envelope: Th\'evenin et al. 2017, or ad hoc turbulence: Lebreton and Maeder 1987; Richer, Michaud, and Turcotte 2000). However, introducing such an extra mixing leads to issues with the CNO neutrino fluxes (see Buldgen et al. 2023), which seem to be systematically lower than the Borexino observations (Appel et al., 2022. Another key aspect to consider when reconciling models with neutrino fluxes is the impact of electronic screening (Mussack and D\"appen, 2011).