Cosmological constraints on curved quintessence

Understand

Dynamical dark energy has gained renewed interest due to recent theoretical and observational developments.

• In the present paper, we focus on a string-motivated dark energy set-up, and perform a detailed cosmological analysis of exponential quintessence with potential $V=V_0 e^{-\lambda\phi}$, allowing for non-zero spatial curvature.
• We first gain some physical intuition into the full evolution of such a scenario by analysing the corresponding dynamical system.
• Then, we test the model using a combination of Planck CMB data, DESI BAO data, as well as recent supernovae datasets.