Shear Alfvenic Waves in Electron-Positron Plasma: Analysis of Solitary Wave Properties and Numerical Validation

TL;DR

This paper analyzes shear Alfvenic waves in electron-positron plasma using a perturbation approach, identifying solitary wave properties and validating numerical results with exact solutions, relevant for laboratory and space plasma studies.

Contribution

It introduces a detailed analysis of solitary wave properties in EP plasma and validates numerical methods against exact solutions, advancing understanding of nonlinear wave phenomena.

Findings

Identification of hump-shaped solitary waves

Good agreement between numerical and exact solutions

Insights into nonlinear electromagnetic wave behavior in EP plasma

Abstract

The investigation employed the reductive perturbation approach to study the nonlinear propagation of shear Alfvenic waves in an electron-positron (EP) plasma medium. Utilizing the solitary wave solution of the derivative nonlinear Schrodinger equation, the fundamental properties of EP shear Alfven waves were identified, with a focus on their key features such as speed, amplitude, and width. The analysis revealed the presence of hump-shaped solitary waves. Additionally, comparing the numerical results obtained through the finite difference method and the exact solution demonstrated good agreement between the two. These findings hold significance in comprehending nonlinear electromagnetic wave phenomena in laboratory plasma and space environments where EP plasma is present.