Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2008-03-27
Phys.Rev.D78:054501,2008
Physics
High Energy Physics
High Energy Physics - Lattice
23 pages, 18 figures
Scientific paper
10.1103/PhysRevD.78.054501
In this work we perform the parameter tuning of three flavors of dynamical clover quarks on anisotropic lattices. The fermion action uses three-dimensional spatial stout-link smearing. The gauge anisotropy is determined in a small box with Schr\"odinger background using Wilson-loop ratios. The fermion anisotropy is obtained from studying the meson dispersion relation with antiperiodic boundary conditions in the time direction. The spatial and temporal clover coefficients are fixed to the tree-level tadpole-improved values, and we demonstrate that they satisfy the nonperturbative conditions as determined by the Schr\"odinger functional method. For the desired lattice spacing $a_s\approx 0.12$ fm and renormalized anisotropy $\xi=3.5$, we find the gauge and fermionic anisotropies can be fixed to quark mass independent values up through the strange quark mass. This work lays the foundation needed for further studies of the excited-state hadron spectrum.
Edwards Robert G.
Joó Bálint
Lin Huey-Wen
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