Dimensional deconstruction and neutrino physics

Seesaw neutrino masses with large mixings from dimensional deconstruction.

We demonstrate a dynamical origin for the dimension-five seesaw operator in dimensional deconstruction models. Light neutrino masses arise from the seesaw scale which corresponds to the inverse lattice spacing. It is shown that the deconstructing limit naturally prefers maximal leptonic mixing. Higher-order corrections which are allowed by gauge invariance can transform the bimaximal into a bil...

Deconstruction and Bilarge Neutrino Mixing

We present a model for lepton masses and mixing angles using the deconstruction setup, based on a non-Abelian flavor symmetry which is a split extension of the Klein group Z2 × Z2. The symmetries enforce an approximately maximal atmospheric mixing angle θ23, a nearly vanishing reactor mixing angle θ13, and the hierarchy of charged lepton masses. The charged lepton mass spectrum emerges from the...

QCD and dimensional deconstruction

Motivated by phenomenological models of hidden local symmetries and the ideas of dimensional deconstruction and gauge/gravity duality, we consider the model of an “open moose”. Such a model has a large number K of hidden gauge groups as well as a global chiral symmetry. In the continuum limit K → ∞ the model becomes a 4+1 dimensional theory of a gauge field propagating in a dilaton background a...

Deconstructing Dimensional Deconstruction

Dimensional deconstruction (DD) abstracts from higher dimensional models features of related 4–dimensional ones. DD was proposed in Refs. [1–3] as a scheme for constructing models of naturally light composite Higgs boson. These are models in which—without fine–tuning of parameters—the composite Higgs’s mass M and vacuum expectation value v are much lighter than its binding energy scale Λ. We re...

Low-Energy Neutrino Physics and Neutrino Mass