出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Overlap fermions, which preserve exact chiral symmetry on the lattice, provide a powerful tool
for investigating the topological structure of the vacuum. Applying this formulation to zerotemperature
quenched SU(3) configurations generated by means of the Lüscher-Weisz action, we
define the topological charge density with and without UV filtering and study its properties by
looking at the density profile and the two-point correlation function. We observe that the density
possesses global sign coherent structures, which get increasingly tangled as more and more modes
are included. This change of the structure is also detected by the increasing negative tail of the
two-point function. We also study the inverse participation ratio of the eigenmodes and discuss
their dimensionality.
