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New results on cut-off effects in spectroscopy with the fixed point action

Peter Hasenfratz·K. Jimmy Juge·Ferenc Niedermayer
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Abstract

Our study on the cut-off effects in quenched light hadron spectroscopy and pion scattering length with the fixed point action is extended by results obtained at a lattice spacing a=0.102 fm in a box of size L=1.8 fm. The cut-off effects are small, but clearly seen as the resolution is increased from a=0.153 fm to a=0.102 fm. In the quark mass region where the errors are small and under control, our results on the APE plot lie close to the extrapolated numbers of the CP-PACS Collaboration.

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Peter Hasenfratz, K. Jimmy Juge, Ferenc Niedermayer. 2004-12-21. New results on cut-off effects in spectroscopy with the fixed point action. https://doi.org/10.1088/1126-6708%2F2004%2F12%2F030

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