In supersymmetric theories with extra dimensions, the Higgs and matter fields can be part of the gauge multiplet, so that the Yukawa interactions can arise from the gauge interactions. This leads to the possibility of gauge–Yukawa coupling unification, gi = yf , in the effective four dimensional theory after the initial gauge symmetry and the supersymmetry are broken upon orbifold compactificat...

We construct a family of simple gauge models in which three sterile neutrinos become naturally light by virtue of a generalized seesaw mechanism involving a chiral gauge symmetry. Examples where the chiral gauge group is SU(5), SU(7), SU(3) and/or their descendants are presented. A unified model based on SO(10) × SO(10) which embeds many of these models is constructed wherein three light steril...

Models for dynamical breaking of supersymmetric grand unified theories are presented. The doublet-triplet splitting problem is absent since the Higgs doublet superfields can be identified with the massless mesons of the strong gauge group whereas there are no massless states corresponding to the colored Higgs fields. Various strong gauge groups SU(Nc), Sp(Nc) and SO(Nc) are examined. In a model...

The tremendous phenomenological success of the Standard Model (SM) suggests that its flavor structure and gauge interactions may not be arbitrary but should have a fundamental first-principle explanation. In this work, we explore how basic distinctive properties SM dynamically emerge from unified New Physics framework tying together both physics Grand Unified Theory (GUT) concepts. This is sugg...

X iv :h ep -t h/ 04 06 04 9v 1 4 J un 2 00 4 UNIFIED GAUGE FIELD THEORYAND TOPOLOGICALTRANSITIONS AJAY PATWARDHAN Physics Department ,St Xavier’s College, Mahapalika Marg, Mumbai, India [email protected] Visitor, Institute of Mathematical sciences, Chennai, India ABSTRACT The search for a Unified description of all interactions has created many developments of mathematics and physics. The role o...

Gauge-coupling unification is just as successful in the standard model with six Higgs doublets as it is in the minimal supersymmetric standard model. However, the gauge couplings unify at 10 GeV, which yields rapid proton decay in the SU(5) model. I propose that the grand-unified gauge group is instead SU(3)c × SU(3)L × SU(3)R, in which baryon number is conserved by the gauge interactions. Natu...

The inflaton necessary to implement the mechanism of inflationary cosmology has natural candidates in quiver gauge theory. We discuss the dimensionless coefficients of quartic couplings and enumerate scalars which are singlet under the low-energy gauge group. The inflaton mass is generally predicted to be in the TeV region, close to 4 TeV for one specific unified model. A quartic inflaton poten...

In non-supersymmetric grand unified models a “radiative fermion mass hierarchy” can be achieved in which the spectrum of quark and lepton masses is determined entirely by physics at the unification scale, with many relations following from the unified gauge symmetry, and with the masses of the lightest family arising from loops. A simple, realistic, and predictive model of this kind is presente...