Pseudoatom molecular dynamics

TL;DR

Pseudoatom molecular dynamics (PAMD) is a novel simulation method that combines density functional theory with classical molecular dynamics, enabling efficient and accurate modeling of warm and hot dense matter for single or multi-component plasmas.

Contribution

The paper introduces PAMD, a new simulation approach that achieves ab-initio accuracy with significantly reduced computational cost for dense plasma systems.

Findings

Provides equation of state data for dense plasmas

Accurately computes self-diffusion coefficients

More efficient than traditional ab-initio methods

Abstract

A new approach to simulating warm and hot dense matter that combines density functional theory based calculations of the electronic structure to classical molecular dynamics simulations with pair interaction potentials is presented. The new method, which we call pseudoatom molecular dynamics (PAMD), can be applied to single or multi-component plasmas. It gives equation of state and self-diffusion coefficients with an accuracy comparable to ab-initio simulations but is computationally much more efficient.