Screening of a test charge in a free-electron gas at warm dense matter and dense non-ideal plasma conditions

Abstract

The screening of a test charge by partially degenerate non-ideal free electrons at conditions related to warm dense matter and dense plasmas is investigated using linear response theory and the local field correction based on ab inito Quantum Monte-Carlo simulations data. The analysis of the obtained results is performed by comparing to the random phase approximation and the Singwi-Tosi-Land-Sjölander approximation. The applicability of the long-wavelength approximation for the description of screening is investigated. The impact of electronic exchange-correlations effects on structural properties and the applicability of the screened potential from linear response theory for the simulation of the dynamics of ions are discussed.

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• The Relevance of Electronic Perturbations in the Warm Dense Electron Gas
• Effective electronic forces and potentials from ab initio path integral Monte Carlo simulations
• Accelerating Equilibration in First-Principles Molecular Dynamics with Orbital-Free Density Functional Theory
• Nonlinear Density Response and Higher Order Correlation Functions in Warm Dense Matter
• Assessing the accuracy of hybrid exchange-correlation functionals for the density response of warm dense electrons
• From Density Response to Energy Functionals and Back: An ab initio perspective on Matter Under Extreme Conditions
• Unravelling the nonlinear ideal density response of many-body systems
• Averaging over atom snapshots in linear-response TDDFT of disordered systems: A case study of warm dense hydrogen
• Imposing Correct Jellium Response Is Key to Predict the Density Response by Orbital-Free DFT
• Ionisation Calculations using Classical Molecular Dynamics
• Ion core effect on transport characteristics in warm dense matter
• Excitation signatures of isochorically heated electrons in solids at finite wavenumber explored from first principles
• Resonant Electron-Plasmon Interactions in Drifting Electron Gas
• Generalized density functional theory framework for the non-linear density response of quantum many-body systems
• Investigation of the influence of single particle oscillations on the transport properties of dense plasma
• Modeling partially-ionized dense plasma using wavepacket molecular dynamics
• Nonlinear electronic density response of the warm dense electron gas: multiple perturbations and mode coupling
• Density-Functional-Theory Perspective on the Non-Linear Response of Correlated Electrons Across Temperature Regimes