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Two flavors of dynamical quarks on anisotropic lattices
Umeda, T.
Aoki, S.
Fukugita, M.
Ishikawa, K.-I.
Ishizuka, N.
Iwasaki, Y.
岩崎, 洋一
Kanaya, K.
Kuramashi, Y.
Lesk, V. I.
Namekawa, Y.
Okawa, M.
Taniguchi, Y.
Ukawa, A.
宇川, 彰
Yoshie, T.
We report on our study of two-flavor full QCD on anisotropic lattices using O(a)-improved Wilson quarks coupled with a renormalization-group-improved glue. The bare gauge and quark anisotropies corresponding to the renormalized anisotropy ξ=as/at=2 are determined as functions of β and κ, which cover the region of spatial lattice spacings as≈0.28-0.16 fm and mPS/mV≈0.6-0.9. The calibrations of the bare anisotropies are performed with the Wilson loop and the meson dispersion relation at four lattice cutoffs and 5-6 quark masses. Using the calibration results we calculate the meson mass spectrum and the Sommer scale r0. We confirm that the values of r0 calculated for the calibration using pseudoscalar and vector meson energy momentum dispersion relations coincide in the continuum limit within errors. This work serves to lay the groundwork for studies of heavy quark systems and the thermodynamics of QCD including the extraction of the equation of state in the continuum limit using Wilson-type quark actions.
journal article
American Physical Society
2003-08
application/pdf
Physical review D
3
68
034503
http://hdl.handle.net/2241/89324
2470-0010
AA00773624
https://tsukuba.repo.nii.ac.jp/record/7780/files/PRD_68-3.pdf
eng
https://doi.org/10.1103/PhysRevD.68.034503
(c) 2003 The American Physical Society
open access