Study Explains Why Video Diffusion Models Break Physics

A new arXiv paper from BUPT offers the first interpretability study of motion planning in text-to-video diffusion models, finding that trajectories are fixed early in denoising and RoPE's spatial attention decay locks them in, causing physics violations.

2026-09-22 ~ 2026-09-24 · 2 related posts

• BUPT study: RoPE attention decay causes video diffusion models to violate physics — BUPT-CIST · 2026-09-22
• Video diffusion models break physics because RoPE locks motion paths early, arXiv study finds — udmrzn · 2026-09-24