Hermitian Jordan Triple Systems, the Standard Model plus Gravity, and Alpha = 1/137.03608
Abstract
A physical interpretation is given for some Hermitian Jordan triple systems (HJTS) that were recently discussed by Gunaydin (hep-th/9301050). Quadratic Jordan algebras derived from HJTS provide a formulation of quantum mechanics that is a natural framework within which exceptional structures are identified with physically realistic structures of a quantum field theory that includes both the standard model and MacDowell-Mansouri gravity. The structures allow the calculation of the relative strengths of the four forces, including the fine structure constant ALPHA = 1/137.03608.
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