SU(4) lattice gauge theory with decuplet fermions: Schr\"odinger   functional analysis
  We complete a program of study of SU(N) gauge theories coupled to two flavors of fermions in the two-index symmetric representation by performing numerical simulations in SU(4). The beta function, defined and calculated via the Schr\"odinger functional, runs more slowly than the two-loop perturbative result. The mass anomalous dimension levels off in strong coupling at a value of about 0.45, rendering this theory unsuitable for walking technicolor. A large-N comparison of this data with results from SU(2) and SU(3) reveals striking regularities. 
Thomas DeGrand (University of Colorado), Yigal Shamir, Benjamin   Svetitsky (Tel Aviv University)
hep-lat hep-ph