Contents
Effective Field Theories (EFTs) furnish an elegant means to take the first step towards the next quantum field theory of nature, because they allow to include physics beyond the standard model (SM) in a model-independent way via higher dimensional operators.
Beyond that, they are useful to tackle problems with separated scales, that arise in many areas of fundamental physics. EFTs allow to describe the important physics conveniently in terms of degrees of freedom that are most relevant at a given length-scale. In particular, they allow to consistently re-sum large logarithms of ratios of scales, that would otherwise spoil the perturbative expansion, and provide a modern notion of renormalization.
This lecture provides a comprehensive introduction to the concept of EFTs and modern applications, including the bottom-up approach to physics beyond the SM as a guide to the next theory of nature.
The topics covered include:
- General concept of EFTs and resummation
- EFT of weak interactions: Fermi-Theory and Flavor Physics
- EFT of QCD: Chiral Perturbation Theory
- EFTs and Electroweak Symmetry Breaking: the non-linear Sigma Model
- EFT of Axions / Axion-like particles
- EFTs and neutrino physics
- Bottom-up approach to a more fundamental theory of nature: SM-EFT and its variants
- EFT for Dark Matter
Target Audience
Students of Master of Science in Physics: Theoretical Physics / Particle Physics, PhD students
Useful knowledge
Quantum Field Theory I, Standard Model of Particle Physics
Time and Place
Fr, 09:15 - 11:00 [from 25.04.2025]
Philosophenweg 12: Großer Hörsaal (gHS)