Dimension-2 condensates and Polyakov Chiral Quark Models
Departamento de Fısica Atómica, Molecular y Nuclear, Universidad de Granada, E-18071, Granada, Spain
Accepted: 15 November 2006
Published online: 1 March 2007
We address a possible relation between the expectation value of the Polyakov loop in pure gluodynamics and full QCD based on Polyakov Chiral Quark Models where constituent quarks and the Polyakov loop are coupled in a minimal way. To this end, we use a center symmetry-breaking Gaussian model for the Polyakov loop distribution which accurately reproduces gluodynamics data above the phase transition in terms of dimension-2 gluon condensate. The role played by the quantum and local nature of the Polyakov loop is emphasized.
PACS: 12.39.Fe Chiral Lagrangians – / 11.10.Wx Finite-temperature field theory – / 12.38.Lg Other nonperturbative calculations –
© Società Italiana di Fisica and Springer-Verlag, 2007