Nonperturbative tuning of $O(a^2)$ improved staggered fermions

Abstract

We perform a nonperturbative tuning of the coefficients in the $O(a^2)$ improved action for staggered fermions. The mass splitting for the pions of different doubler flavor is used as a measure of the symmetry breaking effects introduced by $O(a^2)$ discretization errors. We find that the flavor nondegeneracy can be somewhat reduced but not eliminated by such a tuning, indicating the need for new terms in the action to reduce the nondegeneracy.

3 pages. Lattice 2001 proceedings

References in corpus (4)

• Variants of fattening and flavor symmetry restoration
• Flavor-Symmetry Restoration and Symanzik Improvement for Staggered Quarks
• Improved staggered quark actions with reduced flavour symmetry violations for lattice QCD
• Perturbative Improvement for Lattice QCD: An Update

Cited by in corpus (1)

• One-loop matching coefficients for improved staggered bilinears