出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We report on numerical studies of RG decimations in SU(2) gauge theory. We study in particular
a class of plaquette actions involving sums of group representations. We measure a number of
observables representative of different length scales in order to investigate the transformation of
the system under different choices of spin blocking, and examine the flow of the effective action
couplings. A need for a projection to some class of effective actions on the configurations resulting
from the adopted numerical decimation procedures is demonstrated. A numerical decimation
procedure resulting in an effective single plaquette Lagrangian tailored to reproduce different
medium/large scale physics is devised.
