Particle Identifications from Symmetries of Braided Ribbon Network   Invariants
  We develop the idea that the particles of the standard model may arise from excitations of quantum geometry. A previously proposed topological model of preons is developed so that it incorporates an unbounded number of generations. A condition is also found on quantum gravity dynamics necessary for the interactions of the standard model to emerge. 
Sundance Bilson-Thompson, Jonathan Hackett, Lou Kauffman and Lee   Smolin