We find a nontrivial regime of spinfoam quantum gravity that reproduces
classical Einstein equations. This is the double scaling limit of small Immirzi
parameter (gamma), large spins (j) with physical area (gamma times j) constant.
In addition to quantum corrections in the Planck constant, we find new
corrections in the Immirzi parameter due to the quantum discreteness of
spacetime. The result is a strong evidence that the spinfoam covariant
quantization of general relativity possesses the correct classical limit.Comment: 9 pages, shorter version of "Regge gravity from spinfoams
