Instantons and Fixed Point Actions in SU(2) Gauge Theory
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We describe the properties of instantons in lattice gauge theory when the action is a fixed point action of some renormalization group transformation. We present a theoretically consistent method for measuring topological charge using an inverse renormalization group transformation. We show that, using a fixed point action, the action of smooth configurations with non-zero topological charge is greater than or equal to its continuum value $8π^2/g^2$.
uufiles plain latex mss, epsf figures appended as .eps files
uufiles plain latex mss, epsf figures appended as .eps files