X-ray Thomson scattering absolute intensity from the f-sum rule in the imaginary-time domain

Tobias Dornheim; Tilo Döppner; Andrew D. Baczewski; Panagiotis Tolias; Maximilian P. Böhme; Zhandos A. Moldabekov; Thomas Gawne; Divyanshu Ranjan; David A. Chapman; Michael J. MacDonald; Thomas R. Preston; Dominik Kraus; Jan Vorberger

arXiv · 2305.15305

X-ray Thomson scattering absolute intensity from the f-sum rule in the imaginary-time domain

Tobias Dornheim·Tilo Döppner·Andrew D. Baczewski·Panagiotis Tolias·Maximilian P. Böhme·Zhandos A. Moldabekov·Thomas Gawne·Divyanshu Ranjan·David A. Chapman·Michael J. MacDonald·Thomas R. Preston·Dominik Kraus·Jan Vorberger

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Abstract

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.

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Tobias Dornheim, Tilo Döppner, Andrew D. Baczewski, Panagiotis Tolias, Maximilian P. Böhme, Zhandos A. Moldabekov, Thomas Gawne, Divyanshu Ranjan, David A. Chapman, Michael J. MacDonald, Thomas R. Preston, Dominik Kraus, Jan Vorberger. 2023-05-24. X-ray Thomson scattering absolute intensity from the f-sum rule in the imaginary-time domain. https://arxiv.org/abs/2305.15305

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