๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Static quarks with improved statistical precision

โœ Scribed by M. Della Morte; S. Durr; J. Heitger; H. Molke; J. Rolf; A. Shindler; R. Sommer


Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
260 KB
Volume
129-130
Category
Article
ISSN
0920-5632

No coin nor oath required. For personal study only.

โœฆ Synopsis


We present a numerical study for different discretisations of the static action, concerning cut-off effects and the growth of statistical errors with Euclidean time. An error reduction by an order of magnitude can be obtained with respect to the Eichten-Hill action, for time separations beyond 1.3 fm, keeping discretization errors small. The best actions lead to a big improvement on the precision of the quark mass A&, and &, in the static a,pproximation.


๐Ÿ“œ SIMILAR VOLUMES


Static hybrid quarkonium potential with
โœ C. Bernard; T. Burch; C.E. DeTar; Ziwen Fu; Steven Gottlieb; E. Gregory; U.M. He ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 245 KB

We are studying the effects of light dynamical quarks on the excitation energies of a flux tube between a static quark and antiquark. We report preliminary results of an analysis of the ground state potential and the CL+ and lIU potentials. We have measured these potentials on closely matched ense

Ds spectrum and leptonic decays with Fer
โœ Massimo di Pierro; Aida X El-Khadra; Steven Gottlieb; Andreas S Kronfeld; Paul B ๐Ÿ“‚ Article ๐Ÿ“… 2004 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 244 KB

We present preliminary results for the D, meson spectrum and decay constants in unquenched lattice &CD. Simulations are carried out with 2 + 1 dynamical quarks using gauge configurations generated by the MILC collaboration. We use the "asqtad" a2 improved staggered action for the light quarks, and

Improved precision with Hologic Apex sof
โœ B. Fan; E. M. Lewiecki; M. Sherman; Y. Lu; P. D. Miller; H. K. Genant; J. A. She ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 200 KB
Exploring QCD at small sea quark masses
โœ Y. Namekawa; S. Aoki; M. Fukugita; K.-I. Ishikawa; N. Ishizuka; Y. Iwasaki; K. K ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 269 KB

We explore the region of small sea quark masses below mps/mv = 0.5 in two-flavor QCD using a mean-field improved clover quark action and an RG-improved gauge action at a N 0.2 fm on 12" x 24 and 1G3 x 24 lattices. We find that instability of the standard BiCGStab algorithm at small quark masses can