most citedFFT-acceleration and stabilization of the 3D Marching-on-in-Time Contrast Current Density Volume Integral Equation for scattering from high contrast dielectrics

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physics.optics2026

Causality-Aware Interaction Selection for Retarded Green-Function Assembly

Sushil Kumar, Wolf van der Hert, Giampiero Gerini +1

In time-domain integral-equation (TDIE) solvers, the assembly of the retarded Green-function interactions remains a major computational bottleneck. We present a causality-aware ass…

physics.optics2026

Large-Time-Step Operation in a Volume Integral Equation for Dielectric Scattering

Sushil Kumar, Giampiero Gerini, M. C. van Beurden

In transient electromagnetic analysis, explicit time-domain solvers are restricted by the Courant-Friedrichs-Lewy (CFL) condition, making finely discretized dielectric scattering p…