Speaker
Despoina Farakou
Description
We present constraints on Effective Field Theory of Large-Scale Structure (EFTofLSS) counterterms using weak gravitational lensing data and the Sym-EFT emulator [arXiv:2511.05093]. The emulator enables fast and accurate predictions for nonlinear matter power spectrum up to two loops. We study the sensitivity of weak lensing observables to EFT contributions and explore the constraining power of current lensing data on effective parameters describing nonlinear clustering. Our results demonstrate the potential of combining EFT-based modelling with weak lensing measurements for precision cosmology applications.