Neel Shah – Constraining Dark Energy with Complementary Probes of Large-Scale Structure

Research Talk | Cosmology from Home 2026 https://www.cosmologyfromhome.com/ Abstract: The EFT of Dark Energy (EFTofDE) is a theoretically well-motivated class of modified gravity models, able to explain observational hints for dynamical dark energy with further testable predictions for structure growth and lensing. I will discuss the merits and challenges of combining probes of linear perturbations and present state-of-the-art constraints on the EFTofDE by combining CMB, BAO, SNe, RSD, ISW, and 3x2pt datasets. I will show that these constraints are driven not just by the constraining power of probes but also by theoretical priors.