The Standard Model particle content with complete gauge symmetries from the minimal ideals of two Clifford algebras

Niels G. Gresnigt*

*Corresponding author for this work

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8 Citations (Scopus)


Building upon previous works, it is shown that two minimal left ideals of the complex Clifford algebra Cℓ(6) and two minimal right ideals of Cℓ(4) transform as one generation of leptons and quarks under the gauge symmetry SU(3) C× U(1) EM and SU(2) L respectively. The SU(2) L weak symmetries are naturally chiral. Combining the Cℓ(6) and Cℓ(4) ideals, all the gauge symmetries of the Standard Model, together with its lepton and quark content for a single generation are represented. The combined ideals can be written as minimal left ideals of Cℓ(6) ⊗ Cℓ(4) ≅ Cℓ(10) in a way that preserves individually the Cℓ(6) structure and Cℓ(4) structure of physical states. This resulting model captures many of the attractive features of the Georgi and Glashow SU(5) Grand Unified Theory without introducing proton decay or other unobserved processes. Such processes are naturally excluded because they do not preserve the underlying algebraic structure.

Original languageEnglish
Article number583
JournalEuropean Physical Journal C
Issue number6
Publication statusPublished - 1 Jun 2020

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