Precision physics on bound single, few, and many strongly correlated electron systems in strong fields (B01)

该项目的中心目标是精确测定高电荷离子的性质。重点是电子结合能和g因子。研究的系统范围从具有单电子的系统，其中量子电动力学（QED）校正很重要，到具有几个到几个电子的系统，在这些系统中，强电子相关性成为对能级校正的主要来源。理论上，我们将使用有限希尔伯特空间（RAS-CI）内的精确数值解来计算电子结合能。我们将扩展这些方法，推导出由虚态波动引起的主动空间内的重归一化相互作用，从而改进了用于少电子系统的最准确的方法之一。

The central goal of this project is the precise determination of properties of highly charged ions. The focus is on electron binding energies and g-factors. The systems studied range from systems with a single electron where quantum electrodynamic (QED) corrections are important to systems with a few to several electrons where strong electron correlations become the leading source of corrections to energy levels. Theoretically we will calculate the electron binding energies using numerically exact solutions within a finite Hilbert space (RAS-CI). We will extend these methods by deriving renormalized interactions within the active space due to fluctuations into virtual states, thereby improving one of the most accurate methods available for few-electron systems.