Restricted-geometry quantum models beyond atoms: Application of the Eckhardt-Sacha approach to nonsequential double ionization in diatomic systemsRemoveLars C. Bannow, Jan H. Thiede, Michał Ogryzek, Dmitry K. Efimov, and Jakub S. Prauzner-BechcickiPhys. Rev. A 113, 033113 (2026)