Comments on staggered fermions / Panel discussion

Details Comments on staggered fermions / Panel discussion Comments on staggered fermions / Panel discussion

2008-10-24

arxiv.org/abs/0810.4526v1

PoS Confinement8:016,2008

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages, 2 figures, contribution to the 8th Conference on Quark Confinement and the Hadron Spectrum, September 1-6, 2008, Main

Scientific paper

The rooting procedure commonly used with staggered fermions does not correctly treat non-perturbative effects associated with gauge field topology. In practice these effects are small for the physics of flavor non-singlet particles. However large uncontrolled systematic errors are expected for flavor singlet issues, such as the mass of the eta prime meson. While the relative speed of the algorithm in large scale simulations may justify its use, the method is an approximation and should not be promoted as a first principles approach to the strong interactions.

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