出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We report on a study of 2+1 flavor lattice QCD with the O(a)-improved Wilson quarks on a
163 £32 lattice at the lattice spacing 1=a ¼ 2GeV employing Lüscher’s domain-decomposed
HMC(LDDHMC) algorithm. This is dedicated to a preliminary study for the PACS-CS project
which plans to complete the Wilson-clover Nf = 2+1 program lowering the up-down quark
masses close to the physical values as much as possible. We focus on three issues: (i) how light
quark masses we can reach with LDDHMC, (ii) efficiency of the algorithm compared with the
conventional HMC, (iii) parameter choice for the production runs on PACS-CS.
