FieldSeer I: Physics-Guided World Models for Long-Horizon Electromagnetic Dynamics under Partial Observability
This work addresses the long-horizon electromagnetic field dynamics prediction problem for 2D TE waveguides under partial observability. We propose a geometry-aware world model that integrates structural/material map guidance, source-action conditional generation, and a symmetric logarithmic-domain GRU architecture, enabling closed-loop rollout and physics-domain interactive simulation on FDTD-based benchmarks. Our key contribution is the first demonstration of real-time geometric editing—after prefix observation—without reinitializing data assimilation, substantially enhancing interactivity and design adaptability in digital twin systems. Evaluated across three canonical photonic scenarios, the model consistently outperforms GRU and deterministic baselines across 200 reproducible simulations, achieving markedly improved fidelity in suffix-field prediction. This establishes a new, efficient, and editable dynamic modeling paradigm for inverse design of photonic devices.