Dornheim T, Döppner T, Baczewski A D, Tolias P, Böhme M P, Moldabekov Zh A, Gawne Th, Ranjan D, Chapman D A, MacDonald M J, Preston Th R, Kraus D, Vorberger J
Center for Advanced Systems Understanding (CASUS), 02826, Görlitz, Germany.
Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01328, Dresden, Germany.
Sci Rep. 2024 Jun 22;14(1):14377. doi: 10.1038/s41598-024-64182-6.
We present a formally exact and simulation-free approach for the normalization of X-ray Thomson scattering (XRTS) spectra based on the f-sum rule of the imaginary-time correlation function (ITCF). Our method works for any degree of collectivity, over a broad range of temperatures, and is applicable even in nonequilibrium situations. In addition to giving us model-free access to electronic correlations, this new approach opens up the intriguing possibility to extract a plethora of physical properties from the ITCF based on XRTS experiments.
我们提出了一种基于虚时关联函数（ITCF）的f和规则，用于对X射线汤姆逊散射（XRTS）光谱进行归一化的形式上精确且无需模拟的方法。我们的方法适用于任何集体程度，在很宽的温度范围内，甚至适用于非平衡情况。除了让我们能够无模型地获取电子关联外，这种新方法还开辟了一种有趣的可能性，即基于XRTS实验从ITCF中提取大量物理性质。
