Grand Unification on Noncommutative Spacetime
arXiv:hep-ph/0605145 · doi:10.1140/epjc/s10052-006-0191-5
Abstract
We compute the beta-functions of the standard model formulated on a noncommutative spacetime. If we assume that the scale for spacetime noncommutativity is of the order of 2.2 \times 10^{15} GeV we find that the three gauge couplings of the standard model merge at a scale of 2.3 \times 10^{17} GeV. The proton lifetime is thus much longer than in conventional unification models.
6 pages, published version