Nonlinear Electronic Density Response in Warm Dense Matter
arXiv:2004.03229 · doi:10.1103/PhysRevLett.125.085001
Abstract
Warm dense matter (WDM)---an extreme state with high temperatures and densities that occurs e.g. in astrophysical objects---constitutes one of the most active fields in plasma physics and materials science. These conditions can be realized in the lab by shock compression or laser excitation, and the most accurate experimental diagnostics is achieved with lasers and free electron lasers which is theoretically modeled using linear response theory. Here, we present first \textit{ab initio} path integral Monte Carlo results for the nonlinear density response of correlated electrons in WDM and show that for many situations of experimental relevance nonlinear effects cannot be neglected.
References in corpus (11)
- Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
- Worm Algorithm and Diagrammatic Monte Carlo: A New Approach to Continuous-Space Path Integral Monte Carlo Simulations
- A Massive Core in Jupiter Predicted From First-Principles Simulations
- {\em Ab initio} Quantum Monte Carlo simulation of the warm dense electron gas in the thermodynamic limit
- Ab initio equations of state for hydrogen (H-REOS.3) and helium (He-REOS.3) and their implications for the interior of Brown Dwarfs
- Structure, superfluidity, and quantum melting of hydrogen clusters
- Ab Initio Path Integral Monte Carlo Approach to the Static and Dynamic Density Response of the Uniform Electron Gas
- The Strongly Coupled Electron Liquid: ab initio Path Integral Monte Carlo Simulations and Dielectric Theories
- Configuration Path Integral Monte Carlo Approach to the Static Density Response of the Warm Dense Electron Gas
- Permutation Blocking Path Integral Monte Carlo approach to the Static Density Response of the Warm Dense Electron Gas
- Dynamical structure factor of strongly coupled ions in a dense quantum plasma