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First results from 2+1 dynamical quark flavors on an anisotropic lattice: Light-hadron spectroscopy and setting the strange-quark mass

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journal contribution
posted on 01.02.2009, 00:00 authored by Huey-Wen Lin, Saul D. Cohen, Jozef Dudek, Robert G. Edwards, Balint Joo, David G. Richards, John Bulava, Justin Foley, Colin Morningstar, Eric Engleson, Stephen J. Wallace, Keisuke Jimmy Juge, Nilmani Mathur, Michael Peardon, Sinead M. Ryan

We present the first light-hadron spectroscopy on a set of Nf=2+1 dynamical, anisotropic lattices. A convenient set of coordinates that parameterize the two-dimensional plane of light and strange-quark masses is introduced. These coordinates are used to extrapolate data obtained at the simulated values of the quark masses to the physical light and strange-quark point. A measurement of the Sommer scale on these ensembles is made, and the performance of the hybrid Monte Carlo algorithm used for generating the ensembles is estimated.




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