Speaker
Neel Shah
(University of Portsmouth)
Description
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. I will then discuss new predictions for weak lensing observables on mildly nonlinear scales from higher order terms in the EFTofDE Lagrangian.
Author
Neel Shah
(University of Portsmouth)
Co-authors
Dr
Johannes Noller
(UCL)
Kazuya Koyama