Velocity Autocorrelation Function of Magnetized Two-Dimensional One-Component Plasma

TL;DR

This study uses molecular dynamics simulations to analyze how a perpendicular magnetic field influences the velocity autocorrelation function of a two-dimensional one-component plasma, revealing magnetic effects at high temperatures.

Contribution

It provides the first detailed molecular dynamics analysis of the VAF in a 2D OCP under a magnetic field, highlighting magnetic influence on oscillation amplitude.

Findings

VAF oscillations are independent of coupling parameter Gamma.

Magnetic field increases the first peak of the VAF.

High temperature enhances magnetic effects on VAF.

Abstract

The velocity autocorrelation function (VAF) for a two-dimensional one-component plasma (OCP) is investigated by employing molecular dynamics techniques. The VAF exhibits well defined oscillations whose frequency is independent of the dimensionless coupling parameter Gamma. However, the presence of a uniform perpendicular external magnetic field increases the height of the first peak. Molecular dynamics computer simulation results are presented for a two-dimensional OCP in a perpendicular magnetic field as a function of the Plasma parameter. Our simulation results clearly indicate that at high temperature, the magnetic field affects the VAF in a substantial way.