Speaker
Description
Several simple asymptotically free chiral gauge theories are studied. The only “free parameters” of our models are the choice of the gauge group and the representations of the matter Weyl fermions,and the relative magnitudes of the renormalization-group (RG) energy scales $Λ_{i}$ associated with each gauge group. Equivalently, they can be chosen as small gauge coupling constants at an arbitrarily chosen large ultraviolet mass scale, $Λ_{UV}$. None of our models has non-trivial non-Abelian, fermionic “family”-like, global symmetries. We rely on some recent theoretical developments on the dynamics of strongly-coupled chiral gauge theories, based on the generalized symmetries and associated new types of anomaly-matching algorithms, but also on the solid knowledge of vector-like gauge theories such as QCD and $\mathcal{N}=1$ supersymmetric Yang-Mills theory. The structures of the infrared effective theories, the RG-flows, and the light spectra found in these models are surprisingly elegant and intriguing.