On-shell improved lattice QCD with staggered fermions

Abstract

By using Symanzik's improvement program, we study on-shell improved lattice QCD with staggered fermions. We find that there are as many as 15 independent lattice operators of dimension of six~(including both gauge and fermion operators) which must be added to the unimproved action to form an $O(a^2)$ improved action. Among them, the total number of dimension-6 gauge operators and fermion bilinears is 5. The other 10 terms are four-fermion operators. At the tree-level and tadpole-improved tree-level, all the 10 four fermion operators are absent.

18 pages, revtex, 5 figure

References in corpus (1)

• Perfect Lattice Actions for Staggered Fermions

Cited by in corpus (14)

• Flavor-Symmetry Restoration and Symanzik Improvement for Staggered Quarks
• Partial Flavor Symmetry Restoration for Chiral Staggered Fermions
• Chiral Perturbation Theory for Staggered Sea Quarks and Ginsparg-Wilson Valence Quarks
• Improved staggered quark actions with reduced flavour symmetry violations for lattice QCD
• Improved Staggered Fermion Actions for QCD Thermodynamics
• Staggered Chiral Perturbation Theory at Next-to-Leading Order
• Quenched hadron spectroscopy with improved staggered quark action
• Baryons with Ginsparg-Wilson quarks in a staggered sea
• Chiral perturbation theory at non-zero lattice spacing
• Perturbative improvement of staggered fermions using fat links
• The Schwinger Model with Perfect Staggered Fermions
• Partial Restoration of Flavor Symmetry for Chiral Staggered Fermions
• Improvement, dynamical fermions, and heavy quark screening in QCD_3
• Next-to-Leading-Order Staggered Chiral Perturbation Theory