# SU(8) family unification with boson-fermion balance

- Institution: CERN
- Department: TH Theoretical Seminar
- Speaker: Stephen L. Prof. Adler
- Year: 2014
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3013451)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Grand unification has been intensively investigated for over forty years, and many different approaches have been tried. In this talk I propose a model that involves three ingredients that do not appear in the usual constructions: (1) boson--fermion balance without full supersymmetry, (2) canceling the spin 1/2 fermion gauge anomalies against the anomaly from a gauged spin 3/2 gravitino, and (3) using a scalar field representation with non-zero U(1) generator to break the SU(8) gauge symmetry through a ground state which, before dynamical symmetry breaking, has a periodic U(1) generator structure. The model has a number of promising features: (1) natural incorporation of three families, (2) incorporation of the experimentally viable flipped SU(5) model, (3) a symmetry breaking pathway to the standard model using the scalar field required by boson-fermion balance, together with a stage of most attractive channel dynamical symmetry breaking, without postulating additional Higgs fields, (4) vanishing of bare Yukawa couplings, which keeps the spin 1/2 fermions massless after SU(8) symmetry breaking, and together with zero gauge coupling supersymmetries may improve the predictive power of the theory..

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## Lectures

1. [SU(8) family unification with boson-fermion balance](https://invisiblenetwork.ai/learn/cern/3013451/c0f339866fe2), 51 min (CERN's player)