Moiré excitons in generalized Wigner crystals - Jing-Yang You; Chih-En Hsu; Zien Zhu; Benran Zhang; Ziliang Ye; Mit H. Naik; Ting Cao; Hung-Chung Hsueh; Steven G. Louie; Mauro Del Ben; Zhenglu Li (Proceedings of the National Academy of Sciences, 2026)