Light quark masses, chiral condensate and quark-gluon condensate in quenched lattice QCD with exact chiral symmetry
Journal
Nuclear Physics B - Proceedings Supplements
Journal Volume
129-130
Pages
492-494
Date Issued
2004
Author(s)
Hsieh, T.-H.
Abstract
We determine several quantities in quenched lattice QCD with optimal domain-wall fermion. On the 163 × 32 lattice at β = 6.0, we determine the parameters (C, δ, B) in the pseudoscalar meson mass in quenched chiral perturbation theory (qχPT). Using these parameters, as well as our lattice spacing a and the experimental inputs of mπ and mK, we determine the light quark masses: mu,d = 4.4 ± 0.3 MeV, and ms = 98 ± 7 MeV, in MS at μ = 2 GeV. Also, we determine the quark condensate 〈q̄q〉 = -(250 ± 3 MeV)3 , and the quark-gluon condensate g〈q̄σμνFμνq〉 = -(434 ± 4 MeV)5, in MS at, scale 2 GeV. © 2004 Elsevier B.V. All rights reserved.
Type
journal article