Fast spectral separation method for kinetic equation with anisotropic non-stationary collision operator retaining micro-model fidelity
Researchers have developed a novel data-driven collisional operator for one-component plasmas, designed to extend kinetic models beyond the weakly coupled regime. This operator incorporates an anisotropic, non-stationary collision kernel that addresses particle correlations often omitted in traditional Landau formulations. A fast spectral separation method has been created to represent this kernel efficiently, enabling an O(N log N) algorithm that preserves essential physical properties like conservation laws and the H-theorem. AI