Problems of de Sitter models with O8-planes

by Daniel Junghans (MPP Munich)

Wednesday 11 Dec 2024, 15:00 → 20:00 Europe/Berlin

The simplest explanation for the observed accelerating expansion of our universe is a positive cosmological constant, i.e., we live in an approximate de Sitter space. On the other hand, there is growing evidence that various proposals for realizing de Sitter space in string theory do not self-consistently control neglected string corrections. In this talk, I discuss recent results on such control problems for a very simple and explicit de Sitter model with O8-planes proposed by Cordova, de Luca and Tomasiello.