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arXiv · 1203.2197

Cutoff effects of heavy quark vacuum polarization at one-loop order

Andreas Athenodorou
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Abstract

The charm-quark mass is typically not so far from the cutoff 1/a in lattice simulations. Its determinant may then potentially introduce large cutoff effects. We choose the O(a)-improved Wilson formulation and compute the vacuum polarization effects in two rather different observables at one-loop order. One is the quark-antiquark static force and the other the Schroedinger functional coupling; in addition we investigate two more quantities resulting from the latter. In all the cases the lattice artifacts due to the charm-quark are small when compared to the gluonic effects. This indicates that the inclusion of charm-quarks in dynamical fermion simulations is typically not a problem.

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Andreas Athenodorou. 2012-03-09. Cutoff effects of heavy quark vacuum polarization at one-loop order. https://arxiv.org/abs/1203.2197

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