Speaker
Description
We have, for the first time, computed a model-independent two-loop dimension-six effective action by integrating out heavy scalars. As an example, we applied this to the electroweak complex triplet scalar and the 2HDM model. In this talk, I will discuss our approach to computing the two-loop effective action using the Heat-Kernel method, which simplifies the process by avoiding extensive Feynman diagrams and complex momentum integrals. Our approach applies to any theory with a second-order elliptic operator, enabling us to compute quantum corrections from Heat Kernel Coefficients (HKCs). This method yields universal results for models with scalar and fermion fields, making it a powerful tool for applications such as the Standard Model Effective Field Theory (SMEFT).
