Geometric numerical discretisation of electromagnetic quasineutral models
Abstract
In this work, the geometric electromagnetic particle-in-cell (PIC) framework, GEMPICX , is extended to solve the quasineutral, fully kinetic Vlasov–Maxwell equations on dual grids using mimetic finite differences. The discrete action principle is derived, taking into account the duality between the grids. The temporal derivative of the electric field does not directly appear in the dynamical system for the quasineutral model. Hence, a discretised curl–curl equation is used to implicitly obtain the electric field at every time-step. This also circumvents the need to obtain electric potentials. A Lagrange multiplier is used to maintain the discretised divergence of the current density at machine zero.
Fields of Study & Subjects
Gas Dynamics and Kinetic Theory
Model Reduction and Neural Networks
Laser-Plasma Interactions and Diagnostics
Publication details
- Journal / source
- Journal of Plasma Physics
- Publisher
- Cambridge University Press (CUP)
- Volume
- 92
- Issue
- 4
- Publication date
- 1 August 2026
- Language
- EN