Accelerating Visual-Policy Learning through Parallel Differentiable Simulation You, Haoxiang, Liu, Yilang, and Abraham, Ian NeurIPS 2025Spotlight Website arXiv Code Is Bellman Equation Enough for Learning Control? You, Haoxiang, Molu, Lekan, and Abraham, Ian preprint 2025 arXiv Sample-Based Hybrid Mode Control: Asymptotically Optimal Switching of Algorithmic and Non-Differentiable Control Modes Liu, Yilang, You, Haoxiang, and Abraham, Ian preprint 2025 Website arXiv