Scaling study of an improved fermion action on quenched lattices

TL;DR

This paper investigates the scaling behavior of an improved fermion action for heavy-quark calculations on quenched lattices, comparing its performance with standard fermion formulations to evaluate accuracy and efficiency.

Contribution

It provides a detailed scaling study of an $O(a^2)$-improved fermion action on quenched lattices, highlighting its advantages over traditional methods.

Findings

Improved fermion action shows better scaling properties.

Comparison indicates reduced discretization errors.

Results suggest potential for more accurate heavy-quark simulations.

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.