%0 Journal Article
%A Ballesteros, H.G.
%A Fernández Pérez, Luis Antonio
%A Martín Mayor, Víctor
%A Muñoz Sudupe, Antonio
%T Finite Size Scaling and "perfect" actions: the three dimensional Ising model
%D 1998
%@ 0370-2693
%U https://hdl.handle.net/20.500.14352/60079
%X Using Finite-Size Scaling techniques, we numerically show that the first irrelevant operator of the lattice λΦ^(4) theory in three dimensions is within errors completely decoupled at λ = 1.0. This interesting result also holds in the Thermodynamical Limit, where the renormalized coupling constant shows an extraordinary reduction of the scaling-corrections when compared with the Ising model. It is argued that Finite-Size Scaling analysis can be a competitive method for finding improved actions.
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