Entangled de Sitter from stringy axionic Bell pair I: an analysis using Bunch–Davies vacuum Sayantan Choudhury and Sudhakar Panda Eur. Phys. J. C, 78 1 (2018) 52 Published online: 20 January 2018 DOI: 10.1140/epjc/s10052-017-5503-4