(17.07.) Exponential quintessence, without and with matter
David Andriot (LAPTH, Annecy)
17.07.2025 at 16:15
Recent cosmological observations hint at the possibility that dark energy is dynamical. This motivates us to study the viability of a steep exponential quintessence, naturally obtained from string theory. Cosmological solutions corresponding to future attractors without matter then allow for accelerated expansion, as well as scale separation. Including matter to match the present universe however gives different solutions. In that context, we will discuss the distance conjecture. We will also show how to accomodate observations with a steep exponential, especially the apparent phantom regime.
A348