Speaker
Roman Höllwieser
(University of Wuppertal)
Description
We present first results of the scale setting for QCD with $N_f=3+1$ dynamical quarks on the lattice. We use a recently proposed massive renormalization scheme with a non-perturbatively determined clover coefficient. To relate the bare coupling of the simulations to a lattice spacing in fm, we use decoupling of charm at low energy and the value of a dimensionless quantity $\sqrt(t_0^\star)m_{had}$, where $m_{had}$ is an experimentally accessible quantity and $t_0^\star$ is the flow scale $t_0$ at our mass point with $m_{up}=m_{down}=m_{strange}$ and a physical charm mass. We discuss the setup, tuning procedure, simulation parameters and measurement results for two ensembles with different volumes and present a charmonium spectrum.
Authors
Roman Höllwieser
(University of Wuppertal)
Francesco Giacomo Knechtli
(University of Wuppertal)
Tomasz Korzec
(University of Wuppertal)
