Genuine four-partite Bell nonlocality in the curved spacetime Guang-Wei Mi, Xiaofen Huang, Shao-Ming Fei and Tinggui Zhang Eur. Phys. J. C, 85 3 (2025) 354 Published online: 28 March 2025 DOI: 10.1140/epjc/s10052-025-14076-2