Gluon propagator without lattice Gribov copies | Zendy

Constantia Alexandrou | Zendy; Ph. de Forcrand | Zendy; E. Follana | Zendy

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Gluon propagator without lattice Gribov copies

Author(s) -

Constantia Alexandrou,

Ph. de Forcrand,

E. Follana

Publication year - 2001

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.63.094504

Subject(s) - propagator , gluon , lattice (music) , physics , particle physics , quantum electrodynamics , mathematical physics , quantum chromodynamics , acoustics

We study the gluon propagator in quenched lattice QCD using the Laplaciangauge which is free of lattice Gribov copies. We compare our results with thoseobtained in the Landau gauge on the lattice, as well as with variousapproximate solutions of the Dyson Schwinger equations. We find a finite value$\sim (445 \rm{MeV})^{-2}$ for the renormalized zero-momentum propagator(taking our renormalization point at 1.943 GeV), and a pole mass $\sim 640 \pm140$ MeV.Comment: Discussion of the renormalized gluon propagator and of the Laplacian gauge fixing procedure extended. Version to appear in Phys. Rev. D. 15 pages, 8 figure

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