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dc.contributor.authorAyala, A.
dc.contributor.authorBashir, A.
dc.contributor.authorBinosi, D.
dc.contributor.authorCristoforetti, M.
dc.contributor.authorRodríguez Quintero, José
dc.identifier.citationAyala, A.,Bashir, A., Binosi, D., Cristoforetti, M., Rodríguez Quintero.J.: "Quark flavor effects on gluon and ghost propagators". Physical Review D. Vol. 86, n. 7, (2012). DOI: 10.1103/PhysRevD.86.074512en_US
dc.identifier.issn2470-0029 (electrónico)
dc.description.abstractWe compute the full nonperturbative ghost and gluon two-point Green functions by using gauge field configurations with Nf=2 and Nf=2+1+1 twisted-mass quark flavors. We use simulations with several different light quark masses, heavy quark masses close to that of the strange and charm quarks, and the lightest pseudoscalar masses ranging from 270 to 510 [MeV]. Quark flavor effects on both the gluon and the ghost propagators are then investigated in a wide range of momenta, bridging the deep infrared and intermediate momenta domain of QCD interactions in the presence of dynamical quarks. The ghost-gluon vertex is also indirectly probed through a consistency requirement among the lattice data for the gluon and ghost propagators and the ghost propagator Schwinger-Dyson equation. The effective full QCD coupling is finally constructed, and its dependence on the presence of dynamical fermions scrutinized.en_US
dc.description.sponsorshipA. B. wishes to acknowledge the financial grants CONACyT Project No. 46614-F and Coordinacion de la Investigacion Cientifica (CIC) Project No. 4.10 and U.S. Department of Energy, Office of Nuclear Physics, Contract No. DE-AC02-06CH11357. The work of M. C. is supported by the AuroraScience project, which is funded jointly by the Provincia Autonoma di Trento (PAT) and the Istituto Nazionale di Fisica Nucleare (INFN). Part of the calculations were performed using the Aurora Supercomputer at the Fondazione Bruno Kessler (Trento). J.R.-Q. is indebted to O. Pene, Ph. Boucaud, B. Blossier, K. Petrov and C. D. Roberts for fruitful discussions and very helpful comments, and also acknowledges the Spanish MICINN for the support by the Research Project No. FPA2011-23781 and "Junta de Andalucia" by Project No. P07FQM02962.en_US
dc.publisherAmerican Physical Societyen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleQuark flavor effects on gluon and ghost propagatorsen_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/Spanish MICINN [FPA2011-23781]en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/Junta de Andalucia [P07FQM02962]
dc.relation.projectIDinfo:eu-repo/grantAgreement/CONACyT [46614-F]
dc.relation.projectIDinfo:eu-repo/grantAgreement/Coordinacion de la Investigacion Cientifica (CIC) [4.10]
dc.relation.projectIDinfo:eu-repo/grantAgreement/U.S. Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]

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