FieldSeer I: 部分観測下での長期的電磁ダイナミクスに向けた物理誘導型ワールドモデル
FieldSeer I: Physics-Guided World Models for Long-Horizon Electromagnetic Dynamics under Partial Observability
2次元TE導波路における部分観測から電磁場の時間発展を予測する幾何条件付きワールドモデルを提案し、FDTDベンチマークで既存手法より高精度な長期ロールアウトを実現した。
著者: Ziheng Guo, Fang Wu, Maoxiong Zhao, Chaoqun Fang, Yang Bu
分類: physics.optics, cs.LG, physics.comp-ph
原文アブストラクト
We introduce FieldSeer I, a geometry-aware world model that forecasts electromagnetic field dynamics from partial observations in 2-D TE waveguides. The model assimilates a short prefix of observed fields, conditions on a scalar source action and structure/material map, and generates closed-loop rollouts in the physical domain. Training in a symmetric-log domain ensures numerical stability. Evaluated on a reproducible FDTD benchmark (200 unique simulations, structure-wise split), FieldSeer I achieves higher suffix fidelity than GRU and deterministic baselines across three practical settings: (i) software-in-the-loop filtering (64x64, P=80->Q=80), (ii) offline single-file rollouts (80x140, P=240->Q=40), and (iii) offline multi-structure rollouts (80x140, P=180->Q=100). Crucially, it enables edit-after-prefix geometry modifications without re-assimilation. Results demonstrate that geometry-conditioned world models provide a practical path toward interactive digital twins for photonic design.