X-Cache: Cross-Chunk Block Caching for Few-Step Autoregressive World Models Inference. - Yixiao Zeng; Jianlei Zheng; Chaoda Zheng; Shijia Chen; Mingdian Liu; Tongping Liu; Tengwei Luo; Yu Zhang; Boyang Wang; Linkun Xu; Siyuan Lu; Bo Tian; et al. (CoRR, 2026)