Relating the curvature of De Sitter universe to open quantum Lamb shift spectroscopyHardik Bohra, Sayantan Choudhury, Prashali Chauhan, Purnima Narayan, Sudhakar Panda and Abinash SwainEur. Phys. J. C, 81 2 (2021) 196DOI: https://doi.org/10.1140/epjc/s10052-021-08977-1