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Improved lattice operators: the case of the topological charge density

Christou, C. and Giacomo, A. Di and Panagopoulos, H. and Vicari, E. (1996) Improved lattice operators: the case of the topological charge density. Physical review. D, Particles, fields, gravitation, and cosmology, 53 . p. 2619. ISSN 1550-7998

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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 better statistical behavior as estimators of the topological charge density on the lattice, i.e. less noisy; (ii) a multiplicative renormalization much closer to one; (iii) a large suppression of the perturbative tail (and other unphysical mixings) in the corresponding lattice topological susceptibility.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici
Divisions: Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI"
Depositing User: dott.ssa Sandra Faita
Date Deposited: 09 Apr 2015 15:47
Last Modified: 09 Apr 2015 15:47
URI: http://eprints.adm.unipi.it/id/eprint/1823

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