3 papers
cond-mat.str-el2026
Floquet X-Ray Scattering as a Probe of Hidden Electronic Orders
Martin Eckstein, Eva Paprotzki
We develop a theoretical framework for Floquet resonant X-ray scattering, using Floquet theory combined with the ultrashort core-hole lifetime expansion. We obtain a compact expres…
cond-mat.str-el2025
High order strong-coupling expansion for X-ray absorption on a dynamically screened impurity
Eva Paprotzki, Martin Eckstein
Time-resolved X-ray absorption can reveal the dynamical screening of the local Coulomb interaction in strongly correlated photo-excited materials. Here, we focus on the theoretical…
cond-mat.str-el2024
Measuring the ultrafast screening of in photo-excited charge-transfer insulators with time-resolved X-ray absorption spectroscopy
Denis Golez, Eva Paprotzki, Philipp Werner +1
Recent seminal experiments have utilized time-resolved X-ray absorption spectroscopy (XAS) to investigate the ultrafast photo-induced renormalization of the electron interaction ('…