2+1 Flavor Lattice QCD with Luescher's Domain-Decomposed HMC Algorithm

Details 2+1 Flavor Lattice QCD with Luescher's Domain-Decomposed HMC Algorithm 2+1 Flavor Lattice QCD with Luescher's Domain-Decomposed HMC Algorithm

2006-10-10

arxiv.org/abs/hep-lat/0610063v1

PoSLAT2006:029,2006

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, talk presented at Lattice2006 (Algorithm), PoS format

Scientific paper

We report on a study of 2+1 flavor lattice QCD with the $O(a)$-improved Wilson quarks on a $16^3\times 32$ lattice at the lattice spacing $1/a\approx 2$GeV employing Luescher'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 $N_f=2+1$ 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.

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