Standard Model Fermions and N=8 supergravity
Abstract
In a scheme originally proposed by M. Gell-Mann, and subsequently shown to be realized at the SU(3)xU(1) stationary point of maximal gauged SO(8) supergravity by N. Warner and one of the present authors, the 48 spin 1/2 fermions of the theory remaining after the removal of eight Goldstinos can be identified with the 48 quarks and leptons (including right-chiral neutrinos) of the Standard Model, provided one identifies the residual SU(3) with the diagonal subgroup of the color group SU(3)_c and a family symmetry SU(3)_f. However, there remained a systematic mismatch in the electric charges by a spurion charge of 1/6. We here identify the `missing' U(1) that rectifies this mismatch, and that takes a surprisingly simple, though unexpected form.
Cite
@article{arxiv.1412.1715,
title = {Standard Model Fermions and N=8 supergravity},
author = {Krzysztof A. Meissner and Hermann Nicolai},
journal= {arXiv preprint arXiv:1412.1715},
year = {2015}
}
Comments
4 pages, references and minor clarifications added