Some Exact Results in QCD-like Theories

I propose a controlled approximation to QCD-like theories with massless quarks by employing supersymmetric QCD perturbed anomaly-mediated supersymmetry breaking. They have identical particle contents. Thanks the ultraviolet insensitivity of anomaly mediation, dynamics can be worked out exactly when $m\ensuremath{\ll}\mathrm{\ensuremath{\Lambda}}$, where $m$ is size breaking and $\mathrm{\ensuremath{\Lambda}}$ dynamical scale gauge theory. demonstrate that chiral symmetry dynamically broken for ${N}_{f}\ensuremath{\le}\frac{3}{2}{N}_{c}$ while lead nontrivial infrared fixed points larger number flavors. While there may phase transition as increased beyond $\mathrm{\ensuremath{\Lambda}}$, qualitative agreements expectations in are encouraging suggest two limits $m\ensuremath{\ll}\mathrm{\ensuremath{\Lambda}}$ $m\ensuremath{\gg}\mathrm{\ensuremath{\Lambda}}$ same universality class.