Mechanistic origins of catastrophic forgetting: why RL preserves circuits better than SFT?

@misc{nunez2026mechanistic,
  title = {Mechanistic origins of catastrophic forgetting: why RL preserves circuits better than SFT?},
  author = {Jeanmely Rojas Nunez and Viraj Sawant and Nathan Allen and Nomgondalai Amgalanbaatar and Yannis Zongo and Vasu Sharma and Maheep Chaudhary},
  year = {2026},
  eprint = {2605.28860},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.28860},
}