@article{narrativeflatteninghowposttrainingcompre,
  title = {Narrative Flattening: How Post-Training Compresses Thematic, Affective, and Stylistic Variation in LLM Fiction},
  author = {Zehan Li and Yutong Zhu and Siyang Wu and Honglin Bao and James A. Evans},
  year = {2026},
  eprint = {2605.27878},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.27878},
}