出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We systematically compare three filtering methods used to extract topological excitations from
lattice gauge configurations, namely smearing, Laplace filtering and the filtered fermionic topological
charge (with chirally improved fermions). Each of these techniques introduces ambiguities,
like its parameter dependence. We show, however, that all these methods can be tuned to each
other over a broad range of filtering levels and that they reveal very similar topological structures.
For these common structures we find an interesting power-law relating the number and packing
fraction of clusters of filtered topological charge.
