Gauge federation

Today, Preema Pais and I posted on the arXive our work on the idea of gauge federation. The point here is that there may be extra SU(N) gauge groups that exist independently of the SU(3) x SU(2) x U(1) groups of the Standard Model, and are not unified into a single GUT group at high energy. The couplings of these groups would run mostly independently of each other, aside from modifications if the fermions of the higher gauge groups also influence the lower N groups. We motivate this possibility from the idea of emergent gauge theories. There are many successful examples of gauge federation in which the couplings come together to a common strength at high energy. This provides an alternative paradigm to the idea of gauge unification.