出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：CP-PACS and JLQCD collaborations are carrying out a joint project of the 2+1 flavor full QCD
simulation. Gauge configurations are generated for the non-perturbatively O(a)-improvedWilson
quark action and the Iwasaki gauge action using PHMC algorithm at three lattice spacings, a ∼
0.076, 0.010 and 0.122 fm, with a fixed physical volume (2.0 fm)3. We present analysis for the
light meson spectrum and quark masses in the continuum limit, which are determined using data
obtained from the simulations at the two coarser lattices. Our simulations reproduce experimental
values of meson masses. The ud and strange quark masses turn out to be mMS
ud (m = 2 GeV) =
3.34(23) MeV and mMS
s (m = 2 GeV) = 86.7(5.9) MeV. We also show preliminary results at our
finest lattice spacing for which simulations are still being continued.
