Constraints on the scalar potential from spectral action principle
  Using noncommutative geometry, the standard tools of differential geometry can be extended to a broad class of spaces whose coordinates are noncommuting operators acting on a Hilbert space. In the simplest case of coordinates being matrix valued functions on space-time, the standard model of particle physics can be reconstructed out of a few basic principles. Following these ideas, we investigate the general case of models arising from matrices and give the resulting constraints on the scalar potential and gauge couplings constants, as well as some relations between fermionic and bosonic masses. 
T. Krajewski