Grand Unification with the Exceptional Group <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>E</mi></mrow><mrow><mn>8</mn></mrow></msub></mrow></math></span>

I. Bars; M. Günaydin

doi:10.1103/PhysRevLett.45.859

Grand Unification with the Exceptional Group $E_{8}$

I. Bars and M. Günaydin

Phys. Rev. Lett. 45, 859 – Published 15 September 1980

Abstract

A truly unified model of the basic gauge interactions, except for gravity, based on the exceptional group $E_{8}$ is proposed. The fundamental fields belong to the smallest possible single representations for each spin. In addition to accounting for the three "observed" SU(5) families, this Letter predicts the existence of three more conjugate SU(5) families below 1 TeV.