An estimate of the chiral condensate from unquenched lattice QCD

Abstract

Using the parameters in the chiral Lagrangian obtained by MILC from their unquenched lattice QCD calculations with 2+1 flavours of sea quarks, I estimate <psi_bar psi> (2 GeV)/n_f = -(259 \pm 27 MeV)**3 in the MS_bar scheme. I compare this value to other determinations.

8 pages. No figures. Version published in Phys.Lett.B. No change in results, but some parts of the text changed. Additional references added

References in corpus (7)

• Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
• Staggered eigenvalue mimicry
• Scaling tests with dynamical overlap and rooted staggered fermions
• The Index Theorem and Universality Properties of the Low-lying Eigenvalues of Improved Staggered Quarks
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• NJL-type models in the presence of intense magnetic fields: the role of the regularization prescription
• Quark condensate in two-flavor QCD
• Unqueched Kogut-Susskind quark propagator in Lattice Landau Gauge QCD
• Finite volume effects in a quenched lattice-QCD quark propagator
• Parameters of the lowest order chiral Lagrangian from fermion eigenvalues
• On the renormalized scalar density in quenched QCD
• Quark matter under strong magnetic fields in SU(2) NJL-type models: parameter dependence of the cold dense matter phase diagram
• Estimating the Unquenched Strange Quark Mass from the Lattice Axial Ward Identity
• Sigma meson in pole-dominated QCD sum rules
• The condensate for two dynamical chirally improved quarks in QCD
• Quark Condensate in Massless QCD from Planar Equivalence
• Quark condensate in one-flavor QCD
• Magnetic test of chiral dynamics in QCD
• Vector and axial vector mesons in a nonlocal chiral quark model
• The complete lowest order chiral Lagrangian from a little box
• Quark condensate in QCD at nonzero magnetic field and temperature
• Planar Equivalence 2006
• The one-flavor quark condensate and related problems
• Hadronic and radiative decays of the tau lepton