WEAK-COUPLING PERTURBATION-THEORY BY LANGEVIN DYNAMICS - 4TH LOOP ANDBEYOND

We recently proposed a stochastic technique by which one can compute n umerically the coefficients of the weak coupling perturbative expansio n of any observable in Lattice Gauge Theory. We present the result for the simple plaquette of SU(3) up to fourth loop order (beta(-4)) whic h extends by one loop the previously known series. We discuss the poss ibility of extracting the condensate from the plaquette Monte Carlo da ta and we comment on a possible scenario of high order perturbation th eory.