@inproceedings{chen-etal-2026-diversity,
    title = "Diversity Collapse in Multi-Agent {LLM} Systems: Structural Coupling and Collective Failure in Open-Ended Idea Generation",
    author = "Chen, Nuo  and
      Tong, Yicheng  and
      Yang, Yuzhe  and
      He, Yufei  and
      Zhang, Xueyi  and
      Qingyun, Zou  and
      Wang, Qian  and
      He, Bingsheng",
    editor = "Liakata, Maria  and
      Moreira, Viviane P.  and
      Zhang, Jiajun  and
      Jurgens, David",
    booktitle = "Findings of the {A}ssociation for {C}omputational {L}inguistics: {ACL} 2026",
    month = jul,
    year = "2026",
    address = "San Diego, California, United States",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl/2026.findings-acl.13/",
    pages = "251--306",
    ISBN = "979-8-89176-395-1"
}