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arXiv · 1411.1239

Physical and cut-off effects of heavy sea quarks

Francesco Knechtli·Andreas Athenodorou·Mattia Bruno·Jacob Finkenrath·Björn Leder·Marina Marinkovic·Rainer Sommer
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Abstract

We simulate a theory with two dynamical O($a$) improved Wilson quarks whose mass $M$ ranges from a factor eight up to a factor two below the charm quark mass and at three values of the lattice spacing ranging from 0.066 to 0.034 fm. This theory is a prototype to study the decoupling of heavy quarks. We measure the mass and cut-off dependence of ratios of gluonic observables defined from the Wilson flow or the static potential. The size of the 1/$M$ corrections can be determined and disentangled from the lattice artifacts. The difference with the pure gauge theory is at the percent level when two quarks with a mass of the charm quark are present.

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Francesco Knechtli, Andreas Athenodorou, Mattia Bruno, Jacob Finkenrath, Björn Leder, Marina Marinkovic, Rainer Sommer. 2014-11-05. Physical and cut-off effects of heavy sea quarks. https://arxiv.org/abs/1411.1239

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