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arXiv · 1805.01661

Symanzik Improvement with Dynamical Charm: A 3+1 Scheme for Wilson Quarks

Patrick Fritzsch·Rainer Sommer·Felix Stollenwerk·Ulli Wolff
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Abstract

We discuss the problem of lattice artefacts in QCD simulations enhanced by the introduction of dynamical charmed quarks. In particular, we advocate the use of a massive renormalization scheme with a close to realistic charm mass. To maintain O(a) improvement for Wilson type fermions in this case we define a finite size scheme and carry out a nonperturbative estimation of the clover coefficient $c_\mathrm{sw}$. It is summarized in a fit formula $c_\mathrm{sw}(g_0^2)$ that defines an improved action suitable for future dynamical charm simulations.

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Patrick Fritzsch, Rainer Sommer, Felix Stollenwerk, Ulli Wolff. 2018-05-04. Symanzik Improvement with Dynamical Charm: A 3+1 Scheme for Wilson Quarks. https://doi.org/10.1007/jhep06(2018)025

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