Noisy Monte Carlo Algorithm

Abstract

We present an exact Monte Carlo algorithm designed to sample theories where the energy is a sum of many couplings of decreasing strength. The algorithm avoids the computation of almost all non-leading terms. Its use is illustrated by simulating SU(2) lattice gauge theory with a 5-loop improved action. A new approach for dynamical fermion simulations is proposed.

Comments: Lattice 2000 (Algorithms), latex, espcrc2.sty, 4 pages