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arXiv · hep-lat/9712010

Quenched hadron spectroscopy with improved staggered quark action

MILC Collaboration·Claude Bernard·Tom Blum·Thomas A. DeGrand·Carleton DeTar·Steven Gottlieb·Urs M. Heller·James Hetrick·Craig McNeile·K. Rummukainen·Bob Sugar·Doug Toussaint
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Abstract

We investigate light hadron spectroscopy with an improved quenched staggered quark action. We compare the results obtained with an improved gauge plus an improved quark action, an improved gauge plus standard quark action, and the standard gauge plus standard quark action. Most of the improvement in the spectroscopy results is due to the improved gauge sector. However, the improved quark action substantially reduces violations of Lorentz invariance, as evidenced by the meson dispersion relations.

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MILC Collaboration, Claude Bernard, Tom Blum, Thomas A. DeGrand, Carleton DeTar, Steven Gottlieb, Urs M. Heller, James Hetrick, Craig McNeile, K. Rummukainen, Bob Sugar, Doug Toussaint. 1997-12-11. Quenched hadron spectroscopy with improved staggered quark action. https://doi.org/10.1103/physrevd.58.014503

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