出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present preliminary results for the light harden spectrum in Nf = 2+1 lattice QCD using the
nonperturbatively O(a)-improvedWilson quark action and the Iwasaki gauge action. Simulations
are carried out at β = 1.90 on a 323 ×64 lattice using the PACS-CS computer. We employ
Lüscher’s domain-decomposed HMC algorithm to reduce the up-down quark masses toward the
physical value. The pseudoscalar meson masses range from 730 MeV down to 210 MeV. We
compare the light harden spectrum extrapolated to the physical point with the experimental values.
