@article{bao2026cheap2rich,
  title = {Cheap2Rich: A Multi-Fidelity Framework for Data Assimilation and System Identification of Multiscale Physics -- Rotating Detonation Engines},
  author = {Yuxuan Bao and Jan Zajac and Megan Powers and Venkat Raman and J. Nathan Kutz},
  year = {2026},
  eprint = {2601.20295},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2601.20295},
}