SU(n) symmetry breaking by rank three and rank two antisymmetric tensor scalars

We study SU(n) symmetry breaking by rank three and rank two antisymmetric tensor fields. Using tensor analysis, we derive branching rules for the adjoint and antisymmetric tensor representations, and explain why for general SU(n) one finds the same U(1) generator mismatch that we noted earlier in special cases. We then compute the masses of the various scalar fields in the branching expansion, in terms of parameters of the general renormalizable potential for the antisymmetric tensor fields. (C) 2015 The Author. Published by Elsevier B.V.