Dynamic properties of the warm dense electron gas: an ab initio path integral Monte Carlo approach

Abstract

There is growing interest in warm dense matter (WDM) -- an exotic state on the border between condensed matter and plasmas. Due to the simultaneous importance of quantum and correlation effects WDM is complicated to treat theoretically. A key role has been played by \textit{ab initio} path integral Monte Carlo (PIMC) simulations, and recently extensive results for thermodynamic quantities have been obtained. The first extension of PIMC simulations to the dynamic structure factor of the uniform electron gas were reported by Dornheim \textit{et al.} [Phys. Rev. Lett. \textbf{121}, 255001 (2018)]. This was based on an accurate reconstruction of the dynamic local field correction. Here we extend this concept to other dynamical quantities of the warm dense electron gas including the dynamic susceptibility, the dielectric function and the conductivity.

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Cited by in corpus (12)

• Analytical representation of the Local Field Correction of the Uniform Electron Gas within the Effective Static Approximation
• A Phaseless Auxiliary-Field Quantum Monte Carlo Perspective on the Uniform Electron Gas at Finite Temperatures: Issues, Observations, and Benchmark Study
• Overcoming finite-size effects in electronic structure simulations at extreme conditions
• Linear-response time-dependent density functional theory approach to warm dense matter with adiabatic exchange--correlation kernels
• Integral equation theory based dielectric scheme for strongly coupled electron liquids
• Extraction of the frequency moments of spectral densities from imaginary-time correlation function data
• Nonlinear Density Response and Higher Order Correlation Functions in Warm Dense Matter
• Quantum version of the integral equation theory based dielectric scheme for strongly coupled electron liquids
• Improving dynamic collision frequencies: impacts on dynamic structure factors and stopping powers in warm dense matter
• Unravelling the nonlinear ideal density response of many-body systems
• Revisiting the Vashishta-Singwi dielectric scheme for the warm dense uniform electron fluid
• Nonlinear electronic density response of the warm dense electron gas: multiple perturbations and mode coupling