出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：By numerically integrating the differential equations of Stochastic Perturbation Theory, Numerical Stochastic Perturbation Theory can perform high order perturbative calculations in lattice gauge theory. We report on the computation of renormalization constants for Iwasaki gauge action and Wilson fermions. We generated configurations at different lattice volumes V=124, 164, 204, 244, and 324. To remove the effect of finite time step in the integration of stochastic differential equations, for each volume we generate configuration at different time step t=0.010, 0.02, and 0.030. Renormalization constants are defined in the RI’-MOM scheme. We extrapolate them to the continuum limit and also correct for finite volume effects. Here we present one loop results, checking that they are consistant with analytical results.
