Three fermion generations with two unbroken gauge symmetries from the complex sedenions

Abstract

We show that three generations of leptons and quarks with unbroken Standard Model gauge symmetry $SU(3{)}_c\times U(1{)}_{em}$ can be described using the algebra of complexified sedenions $\mathbb{C}\otimes \mathbb{S}$. A primitive idempotent is constructed by selecting a special direction, and the action of this projector on the basis of $\mathbb{C}\otimes \mathbb{S}$ can be used to uniquely split the algebra into three complex octonion subalgebras $\mathbb{C}\otimes \mathbb{O}$. These subalgebras all share a common quaternionic subalgebra. The left adjoint actions of the 8 $\mathbb{C}$-dimensional $\mathbb{C}\otimes \mathbb{O}$ subalgebras on themselves generates three copies of the Clifford algebra $C\ell (6)$. It was previously shown that the minimal left ideals of $C\ell (6)$ describe a single generation of fermions with unbroken $SU(3{)}_c\times U(1{)}_{em}$ gauge symmetry. Extending this construction from $\mathbb{C}\otimes \mathbb{O}$ to $\mathbb{C}\otimes \mathbb{S}$ naturally leads to a description of exactly three generations.

22 pages, 2 figures

References in corpus (3)

• Three generations, two unbroken gauge symmetries, and one eight-dimensional algebra
• Generations: Three Prints, in Colour
• Braided fermions from Hurwitz algebras

Cited by in corpus (2)

• Braids, 3-manifolds, elementary particles: number theory and symmetry in particle physics
• A topological model of composite preons from the minimal ideals of two Clifford algebras