CP violation from noncommutative geometry

If the geometry of space-time is noncommutative, i.e., [x_μ,x_ν]=iθ_μν, then noncommutative CP violating effects may be manifest at low energies. For a noncommutative scale Λ≡θ^-1/2<~2 TeV, CP violation from noncommutative geometry is comparable to that from the standard model alone: the noncommutative contributions to ε and ε^′/ε in the K system may actually dominate over the standard model contributions. Present data permit noncommutative geometry to be the only source of CP violation. Furthermore the most recent findings for g-2 of the muon are consistent with predictions from noncommutative geometry.