Quantum theory for the dynamic microstructure in correlated two-component systems far from equilibrium -- Application to x-ray scattering

Abstract

We present a quantum theory for the dynamic structure factors in non-equilibrium, correlated, two-component systems such as plasmas or warm dense matter. Using this general framework, we derive expressions for effective local field corrections to the random phase approximation. The polarization function, which is needed as the input for the calculation of the structure factors, is calculated in non-equilibrium based on a perturbation expansion in the interaction strength. To make our theory applicable for x-ray scattering, a generalized Chihara decomposition for the total electron structure factor in non-equilibrium is derived. Examples are given for the special case of equilibrium and for a model bump-on-hot-tail distribution, as often encountered during laser heating of materials.

18 pages, 9 figures

References in corpus (6)

• Electron-phonon coupling and energy flow in a simple metal beyond the two-temperature approximation
• X-Ray Thomson scattering without the Chihara decomposition
• Thermal and nonthermal melting of silicon under femtosecond x-ray irradiation
• Observation of inhibited electron-ion coupling in strongly heated graphite
• Theory of Thomson scattering in inhomogeneous media
• Single-particle spectral function for the classical one-component plasma

Cited by in corpus (5)

• Ab initio simulation of warm dense matter
• \textit{Ab Initio} Path Integral Monte Carlo Results for the Dynamic Structure Factor of Correlated Electrons: From the Electron Liquid to Warm Dense Matter
• Electronic Density Response of Warm Dense Matter
• Revealing Non-equilibrium and Relaxation in Warm Dense Matter
• Non-Markovian quantum kinetic simulations of uniform dense plasmas: mitigating the aliasing problem