The possibility of additional quarks and leptons beyond the three generations already
established is discussed. The make-up of this Report is (1) Introduction: the motivations for …

We present a detailed study of dark matter phenomenology in low-scale left-right symmetric
models. Stability of new fermion or scalar multiplets is ensured by an accidental matter parity …

A bstract The hints from the LHC for the existence of a W′ boson of mass around 1.9 TeV
point towards a certain SU (2) L× SU (2) R× U (1) B− L gauge theory with an extended Higgs …

We explore possibilities of gauge coupling unification in left-right symmetric models with non-
minimal particle content. In addition to unification we require the absence of anomalies and …

The neutral fermion sectors of E 6-inspired low-energy models, in particular, the alternative
left-right and inert models, are considered in detail within the nonsupersymmetric scenario …

We present a complete analysis of the neutral fermion sector of supersymmetric E 6-inspired
low-energy models containing an extra SU (2), concentrating on the alternative left-right and …

We discuss the derivation of SO (10) GUT models from higher-dimensional theories with
intermediate breaking scales. We then present models based on the coset space …

By combining the generalized exterior algebra of forms over a noncommutative algebra with
the gauging of discrete directions and the associated Higgs fields, we consider the …

We consider the construction of SU (2) L⊗ SU (2) R⊗ SU (4) partial unification models as an
example of phenomenologically acceptable unification models in the absence of …