Towards a perfect fixed point action for SU(3) gauge theory
  We present an overview of the construction and testing of actions for SU(3) gauge theory which are approximate fixed points of renormalization group equations (at $\beta\rightarrow \infty$). Such actions are candidates for use in numerical simulations on coarse lattices. 
T. DeGrand, A. Hasenfratz, P. Hasenfratz, F. Niedermayer, U. Weise