@article{whendoeschainofthoughthelpamarkovianpers,
  title = {When does Chain-of-Thought Help: A Markovian Perspective},
  author = {Zihan Wang and Yijun Dong and Qi Lei},
  year = {2026},
  eprint = {2603.00306},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.00306},
}