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arXiv · 2502.20038

An Electromagnetic Particle-Particle Model on Solving Relativistic Binary Collision

Yanan Zhang·Xiaochun Ma·Hui Liu·Yinjian Zhao
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Abstract

With the significant advancements in parallel computing techniques, the particle-particle (PP) model has been effectively utilized in various plasma-related applications. However, PP has been limited for solving only electrostatic problems under Coulomb's law, by analogy to the particle-in-cell (PIC) model solving Poisson's equation. While electromagnetic PIC is common with coupled solutions of Maxwell's equations, we propose an electromagnetic (EM) PP model taking advantage of Lienard-Wiechert potentials for point charge in this paper. In addition, this EM-PP model can contribute to simulate relativistic binary collisions with high accuracy, thus its results are used as a baseline to compare with the classical Frankel's relativistic scattering angle, and the accuracy and applicable scope of Frankel's formula are discussed.

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Yanan Zhang, Xiaochun Ma, Hui Liu, Yinjian Zhao. 2025-02-27. An Electromagnetic Particle-Particle Model on Solving Relativistic Binary Collision. https://doi.org/10.1007/s40571-025-00980-7

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