Witten-Veneziano Relation, Quenched QCD, and Overlap Fermions

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dc.creatorDeGrand, Thomas
dc.creatorHeller, Urs M.
dc.date2002-01-31
dc.date2002-05-20
dc.date.accessioned2026-07-07T10:32:31Z
dc.date.available2026-07-07T10:32:31Z
dc.descriptionThe quarks in quenched QCD have an anomalous self-interaction in the flavor singlet Goldstone boson channel. This coupling is extracted from a graph with disconnected quark lines, and is used to infer the mass of the eta-prime meson in full QCD. When the fermions are described by an overlap action, the Witten-Veneziano relation is an exact relation between the topological susceptibility (as defined through fermionic zero modes) and the inferred value of the eta-prime mass. Using an overlap action we compute the hairpin amplitude and determine the fermion zero-mode susceptibility, the inferred eta-prime mass and other parameters characterizing the low energy chiral properties of quenched QCD.
dc.description14 pages, Revtex, 11 postscript figures
dc.identifierhttps://arxiv.org/abs/hep-lat/0202001
dc.identifierhttp://arxiv.org/abs/hep-lat/0202001
dc.identifierPhys.Rev.D65:114501,2002
dc.identifierdoi:10.1103/PhysRevD.65.114501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178783
dc.subjectHigh Energy Physics - Lattice
dc.titleWitten-Veneziano Relation, Quenched QCD, and Overlap Fermions
dc.typetext

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