IISER MOHALI

Abstract: Nature exhibits scale hierarchies, where phenomena occurring at long distances (or, equivalently, at low energies) are largely unaffected by the dynamics at shorter distances. This property allows us to create an effective description of long distances. In particle physics, scale hierarchies enable us to develop Effective Quantum Field Theories (EQFTs or in short EFTs) that can make predictions at energies below a specific threshold without needing to know the intricacies of the underlying ultraviolet theory (whether known or unknown). It is expected that in the coming decade, EFTs will play a major role in understanding the phenomena beyond the Standard Model (BSM), such as matter-antimatter asymmetry, dark matter, and neutrino masses. In this context, I will discuss my recent work on the development of EFTs for BSM physics, their phenomenological applications, and the computer tools designed to automate phenomenological calculations within EFTs.