%0 Journal Article
%A Ammer, Maximilian
%A Dürr, Stephan
%T Calculation of c SW at one-loop order for Brillouin fermions
%J Physical review / D
%V 109
%N 1
%@ 2470-0010
%C Ridge, NY
%I American Physical Society
%M FZJ-2024-03145
%P 014512
%D 2024
%X The Brillouin action is a Wilson-like lattice fermion action with a 81-point stencil, which was found to ameliorate the Wilson action in many respects. The Sheikholeslami-Wohlert coefficient cSW of the clover improvement term has a perturbative expansion cSW=c(0)SW+g20c(1)SW+O(g40). At tree-level c(0)SW=r holds for Wilson and Brillouin fermions alike. We present the Feynman rules for the Brillouin action in lattice perturbation theory, and employ them to calculate the one-loop coefficient c(1)SW with plaquette or Lüscher-Weisz gluons. Numerically its value is found to be about half that of the Wilson action.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001172676100010
%R 10.1103/PhysRevD.109.014512
%U https://juser.fz-juelich.de/record/1025782