Understanding nature with the spin-charge-family theory

Abstract

The spin-charge-family theory, which is a kind of the Kaluza–Klein theories in [Formula: see text] — but with the two kinds of the spin connection fields, the gauge fields of the two Clifford algebra objects, [Formula: see text] and [Formula: see text] — explains all the assumptions of the standard model: The origin of the charges of fermions appearing in one family, the origin and properties of the vector gauge fields of these charges, the origin and properties of the families of fermions, the origin of the scalar fields observed as the Higgs’s scalar and the Yukawa couplings. The theory explains several other phenomena like: The origin of the dark matter, of the matter–antimatter asymmetry, the “miraculous” triangle anomaly cancellation in the standard model and others. The more work is invested in this theory, the more explanations of the observed phenomena the theory is offering. Since the theory starts at [Formula: see text] with a simple action for bosons and fermions, with the fermions carrying only two kinds of spins and no charges and interacting only through gravity (the vielbeins and the two kinds of the spin connection fields) and with the gravity as the only boson fields, the questions arises not only how do the two kinds of spins of fermions in [Formula: see text] manifest the spin, charges and family quantum numbers in [Formula: see text], and how does the gravity in [Formula: see text] manifests as all the observed gauge fields, the scalar fields and the Yukawa couplings, offering also explanation for matter–antimatter asymmetry and the existing of the dark matter, but also why “nature makes a choice of the Clifford algebra rather than the Grassmann algebra” although both kinds of degrees of freedom enable anticommutation relations for fermions, which might explain also the appearance of the dark energy.