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Resummation of Cactus Diagrams in Lattice QCD

Panagopoulos, H. and Vicari, E. (1998) Resummation of Cactus Diagrams in Lattice QCD. Physical review. D, Particles, fields, gravitation, and cosmology, 58 (11). p. 114501. ISSN 1550-7998

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We show how to perform a resummation, to all orders in perturbation theory, of a certain class of gauge invariant diagrams in Lattice QCD. These diagrams are often largely responsible for lattice artifacts. Our resummation leads to an improved perturbative expansion. Applied to a number of cases of interest, this expansion yields results remarkably close to corresponding nonperturbative estimates.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 11 Feb 2014 22:54
Last Modified: 11 Feb 2014 22:54
URI: http://eprints.adm.unipi.it/id/eprint/1884

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