@inproceedings{yu-etal-2026-one, title = "One Frozen Simulator Is Not Enough: Simulator Collapse in Multi-Agent {RL}", author = "Yu, Simon and Tomlin, Nicholas and Abdulhai, Marwa and Chong, Derek and Lu, Ximing and Hou, Abe Bohan and Soylu, Dilara and Levine, Sergey and Manning, Christopher D and Shi, Weiyan", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.emnlp-main.790/", pages = "18336--18373", ISBN = "979-8-89176-459-0" }