“…The ghost propagator, however, is not enhanced anymore in the strong coupling and, for k ≈ 0, it behaves as 1/k 2 . Such behavior of the gluon and ghost propagator is in very good agreement with the most recent lattice simulations in the Landau gauge, see [17,20,[40][41][42][43]. An interesting property of the refinement of the GribovZwanziger action is that its occurrence depends on the spacetime dimension d. In particular, for d = 3, 4, the formation of dimension-two condensates is dynamically favored and the Gribov-Zwanziger action is naturally refined [37,44].…”