Andrea Favorito, PhD Student at Institute for Theoretical Physics, ETH Zürich
Surveys of the large-scale structure of the Universe are becoming increasingly precise. A key theoretical framework for interpreting this data and constraining cosmological models is the Effective Field Theory of Large-Scale Structure (EFTofLSS), a particle-physics–inspired approach to modelling cosmic clustering beyond linear order. In this talk, I will discuss recent progress in computing loop corrections to cosmological correlators within the EFTofLSS, drawing on techniques originally developed for scattering amplitudes in Quantum Field Theories. I will focus on a new numerical method to compute the two-loop power spectrum, which offers an efficient and flexible foundation for future higher-order extensions.
Article
https://arxiv.org/pdf/2509.05187
Recording
The talk will be streamed and there will be a recording.