Scaling study of an improved fermion action on quenched lattices

Abstract

We present scaling studies for heavy-quark observables calculated with an O(a 2 )-improved fermion action on tree-level Symanzik improved gauge configurations. Lattices of 1/a = 2.0-3.8 GeV with an equal physical volume 1.6 fm are used. The results are compared with the standard domain-wall and naive Wilson fermions.

Fine lattice simulations with the Ginsparg-Wilson fermions

“…In the rest of this article we present some basic tests of the generated gauge configurations as a preparation for physics studies. For other related works, see [4,5].…”

Charm physics with Moebius Domain Wall Fermions

“…Furthermore we developed the expertise and understanding of the parameter space which is needed for the dynamical simulations and are now set-up for the aforementioned ongoing 2+1 f measurements presented at this conference [2]. A similar study comparing different valence discretisations for the heavy quarks was carried out on the same gauge ensembles and also presented at this conference [3].…”

Heavy Flavour Physics Review

“…I note that an interesting new method is introduced in Ref. [10]. Starting with the so-called Brillouin fermion action [11], a tree-level O(a 2 ) improved version of this action is introduced in Ref.…”

“…Starting with the so-called Brillouin fermion action [11], a tree-level O(a 2 ) improved version of this action is introduced in Ref. [10] and tested numerically in quenched simulations for heavy quarks (am h 0.5). 2 Very small cutoff effects are observed, and it will be interesting to see unquenched calculations of charm-quark quantities with this new action, which the authors are planning to do.…”