Improving the topological charge density operator on the lattice
Date
1996Source
Nuclear Physics B - Proceedings SupplementsVolume
47Issue
1-3Pages
266-269Google Scholar check
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We analyze the properties of a class of improved lattice topological charge density operators, constructed by a smearing-like procedure. By optimizing the choice of the parameters introduced in their definition, we find operators having (i) a much better statistical behavior as estimators of the topological charge density on the lattice, i.e. much less noisy (ii) a multiplicative renormalization much closer to one (iii) a large suppression of the perturbative tail in the corresponding lattice topological susceptibility.