@article{whenpretraininghurtslorafinetuningadynam,
  title = {When pre-training hurts LoRA fine-tuning: a dynamical analysis via single-index models},
  author = {Gibbs Nwemadji and Bruno Loureiro and Jean Barbier},
  year = {2026},
  eprint = {2602.02855},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2602.02855},
}