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arXiv · 1012.3037

Determination of the Static Potential with Dynamical Fermions

Michael Donnellan·Francesco Knechtli·Björn Leder·Rainer Sommer
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Abstract

We present in detail a technique to extract the potential between a static quark and anti-quark pair from Wilson loops measured on dynamical configurations. This technique is based on HYP smearing and leads to an exponential improvement of the noise-to-signal ratio of Wilson loops. We explain why the correct continuum potential is obtained and show numerical evidence that the cut-off effects are small. We present precise results for the non-perturbative potential. As applications, we determine the scale r_0/a and study the shape of the static potential in the range of distances around r_0, where it can be compared with phenomenological potential models.

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Michael Donnellan, Francesco Knechtli, Björn Leder, Rainer Sommer. 2011-04-13. Determination of the Static Potential with Dynamical Fermions. https://doi.org/10.1016/j.nuclphysb.2011.03.013

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