On the finite spectral triple of an almost-commutative geometry
arXiv:1011.4925
Abstract
In this short communication, we examine the relevance of the signature of the space-time metric in the construction of the product of a pseudo-Riemannian spectral triple with a finite triple describing the internal geometry. We obtain arguments favouring the appearance of SU(2) and U(1) as gauge groups in the standard model.
New version with references updated; Brazilian Journal of Physics vol 42, 2012