Exceptional and Spinorial Conformal Windows
  We study the conformal window of gauge theories containing fermionic matter fields, where the gauge group is any of the exceptional groups with the fermions transforming according to the fundamental and adjoint representations and the orthogonal groups where the fermions transform according to a spinorial representation. We investigate the phase diagram using a purely perturbative four loop analysis, the all-orders beta function and the ladder approximation. 
Matin Mojaza, Claudio Pica, Thomas A. Ryttov, Francesco Sannino
hep-ph hep-lat hep-th