Two-flavor QCD simulation with exact chiral symmetry
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki 305-8571 (Japan)
- Niels Bohr Institute, Niels Bohr International Academy, Blegdamsvej 17 DK-2100 Copenhagen O (Denmark)
- High Energy Accelerator Research Organization (KEK), Ibaraki 305-0801 (Japan)
- Department of Physics, Hiroshima University, Hiroshima 739-8526 (Japan)
- Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
We perform numerical simulations of lattice QCD with two flavors of dynamical overlap quarks, which have exact chiral symmetry on the lattice. While this fermion discretization is computationally demanding, we demonstrate the feasibility to simulate reasonably large and fine lattices by a careful choice of the lattice action and algorithmic improvements. Our production runs are carried out on a 16{sup 3}x32 lattice at a single lattice spacing around 0.12 fm. We explore the sea quark mass region down to m{sub s}/6, where m{sub s} is the physical strange quark mass, for a good control of the chiral extrapolation in future calculations of physical observables. We describe in detail our setup and algorithmic properties of the production simulations and present results for the static quark potential to fix the lattice scale and the locality of the overlap operator.
- OSTI ID:
- 21250247
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 1; Other Information: DOI: 10.1103/PhysRevD.78.014508; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Two-Flavor Lattice-QCD Simulation in the {epsilon} Regime with Exact Chiral Symmetry
First results from 2+1-flavor domain wall QCD: Mass spectrum, topology change, and chiral symmetry with L{sub s}=8