TY  - CONF
AU  - Ammer, Maximilian
AU  - Durr, Stephan
TI  - Stout-smearing, gradient flow and $c_{\text{SW}}$ at one loop order
VL  - 396
PB  - Sissa Medialab Trieste, Italy
M1  - FZJ-2023-00116
SP  - 407
PY  - 2022
N1  - 7 pages, 1 figure, talk given at the 38th International Symposium on Lattice Field Theory (LATTICE2021), 26th-30th July 2021, Zoom/Gather@Massachusetts Institute of Technology
AB  - The one-loop determination of the coefficient $c_\text{SW}$ of the Wilson quark action has been useful to push the leading cut-off effects for on-shell quantities to $\mathcal{O}(\alpha^2 a)$ and, in conjunction with non-perturbative determinations of $c_\text{SW}$, to $\mathcal{O}(a^2)$, as long as no link-smearing is employed. These days it is common practice to include some overall link-smearing into the definition of the fermion action. Unfortunately, in this situation only the tree-level value $c_\text{SW}^{(0)}=1$ is known, and cut-off effects start at $\mathcal{O}(\alpha a)$. We present some general techniques for calculating one loop quantities in lattice perturbation theory which continue to be useful for smeared-link fermion actions. Specifically, we discuss the application to the 1-loop improvement coefficient $c_\text{SW}^{(1)}$ for overall stout-smeared Wilson fermions.
T2  - 38th International Symposium on Lattice Field Theory
CY  - 26 Jul 2021 - 30 Jul 2021, MIT, Boston (virtual) (USA)
Y2  - 26 Jul 2021 - 30 Jul 2021
M2  - MIT, Boston (virtual), USA
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.22323/1.396.0407
UR  - https://juser.fz-juelich.de/record/916813
ER  -