Orateur
Dr
Pham Ngoc Hoa Vuong
(DESY)
Description
We present the construction of Effective Field Theories (EFTs) in which a chiral fermion, charged under both gauge and global symmetries, is integrated out via Path Integral formalism. These symmetries can be spontaneously broken, and the global ones might also be anomalous. This setting is typically served to study the structure of low-energy axion EFTs, where the anomalous global symmetry can be the U(1) Peccei-Quinn and the local symmetries can be the SM electroweak chiral gauge symmetries. We then apply our technique to axion models and compute non-intuitive couplings between axion and the massive SM gauge fields that arise when decoupling massive chiral fermions.
