The dynamics of charged particles in electromagnetic fields is an essential component of
understanding the most extreme environments in our Universe. In electromagnetic fields of …

One scenario for the generation of fast radio bursts (FRBs) is magnetic reconnection in a
current sheet of the magnetar wind. Compressed by a strong magnetic pulse induced by a …

We present a scheme that spatially couples two gyrokinetic codes using first-principles.
Coupled equations are presented and a necessary and sufficient condition for ensuring …

The traditional explicit electrostatic momentum-conserving particle-in-cell algorithm requires
strict resolution of the electron Debye length to deliver numerical stability and accuracy. The …

As the growth of data sizes continues to outpace computational resources, there is a
pressing need for data reduction techniques that can significantly reduce the amount of data …

Covering the core and the edge region of a tokamak, respectively, the two gyrokinetic
turbulence codes Gyrokinetic Electromagnetic Numerical Experiment (GENE) and X-point …

We propose a new scheme for simulation of collisions with multiple possible outcomes in
variable-weight DSMC computations. The scheme is applied to a 0-D ionization rate …

We propose an unsupervised machine-learning checkpoint-restart (CR) algorithm for
particle-in-cell (PIC) algorithms using Gaussian mixtures (GM). The algorithm compresses …

Abstract In Particle-In-Cell simulation, macro-particles represent clusters of numerous
physical particles. Rational merging or splitting of these macro-particle clusters can …

The magnetohydrodynamics with embedded particle-in-cell (MHD-EPIC) model has been
successfully applied to global magnetospheric simulations in recent years. However, the PIC …