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 f
Static hybrid quarkonium potential with improved staggered quarks
β Scribed by C. Bernard; T. Burch; C.E. DeTar; Ziwen Fu; Steven Gottlieb; E. Gregory; U.M. Heller; J. Osborn; R.L. Sugar; D. Toussaint
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 245 KB
- Volume
- 119
- Category
- Article
- ISSN
- 0920-5632
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β¦ Synopsis
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 ensembles of gauge configurations, generated in the quenched approximation and with 2$1 flavors of Asqtad improved staggered quarks.
π SIMILAR VOLUMES
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