Dark Matter from $SU(6)\to SU(5)\times U(1{)}_N$

Abstract

Matter and dark matter are unified under the framework of $SU(6)\to SU(5)\times U(1{)}_N$. A dark-matter candidate is possible, not because it is stable, but because it has a very long lifetime, in analogy to that of the proton in theories of grand unification. A specific example is presented.

Comments: 14 pages, 2 figures, version to be published in PRD