Quantum entanglement for continuous variables sharing in an expanding spacetime Wen-Mei Li, Rui-Di Wang, Hao-Yu Wu, Xiao-Li Huang, Hao-Sheng Zeng and Shu-Min Wu Eur. Phys. J. C, 83 3 (2023) 222 Published online: 16 March 2023 DOI: 10.1140/epjc/s10052-023-11344-x