Hamiltonian analysis of the BFCG theory for a strict Lie 2-group
  We perform a complete Hamiltonian analysis of the BFCG action for a general Lie 2-group by using the Dirac procedure. We show that the resulting dynamical constraints eliminate all local degrees of freedom which implies that the BFCG theory is a topological field theory. 
Aleksandar Mikovic, Miguel Angelo Oliveira and Marko Vojinovic
math-ph gr-qc hep-th math.MP