Unquenched Numerical Stochastic Perturbation Theory

F. Di Renzo^[1], V. Miccio^[1] and L. Scorzato ^[2],

^[1]Università degli Studi di Parma and I.N.F.N., Gruppo collegato di Parma, Parco Area delle Scienze, 43100 Parma, Italy
^[2]DESY Theory Group, Notkestrasse 85, D-22603 Hamburg, Germany

Abstract

The inclusion of fermionic loops contribution in Numerical Stochastic Perturbation Theory (NSPT) has a nice feature: it does not cost so much (provided only that an FFT can be implemented in a fairly efficient way). Focusing on Lattice SU(3), we report on the performance of the current implementation of the algorithm and the status of first computations undertaken.