Improved flavor symmetry in Kogut-Susskind fermion actions

Abstract

We study improved Kogut-Susskind fermion actions focusing on flavor symmetry restoration. Several variants of fat actions suitable for dynamical simulations are considered, including an action with no tree level order a-squared errors. The spectrum of all the pions is computed and used as a measure of flavor symmetry violation. Finally, the Naik term is introduced to restore rotational symmetry.

3 pages, contribution to LATTICE-99

References in corpus (3)

• Variants of fattening and flavor symmetry restoration
• Flavor-Symmetry Restoration and Symanzik Improvement for Staggered Quarks
• Testing improved actions for dynamical Kogut-Susskind quarks

Cited by in corpus (14)

• The QCD spectrum with three quark flavors
• Interactions of Charmed Mesons with Light Pseudoscalar Mesons from Lattice QCD and Implications on the Nature of the D_{s0}^*(2317)
• Nuclear Physics from Lattice QCD
• The QCD equation of state from the lattice
• Chiral Logs in the Presence of Staggered Flavor Symmetry Breaking
• Lattice calculation of $1^{-+}$ hybrid mesons with improved Kogut-Susskind fermions
• QCD thermodynamics with 2+1 flavors at nonzero chemical potential
• Charm annihilation effects on the hyperfine splitting in charmonium
• Methods for Pseudoscalar Flavour-Singlet Mesons with Staggered Fermions
• Heavy-light decay constants with three dynamical flavors
• Bottom-Hadron Mass Splittings from Static-Quark Action on 2+1-Flavor Lattices
• Exotic hybrid mesons from improved Kogut-Susskind fermions
• Thermodynamics with 3 and 2+1 Flavors of Improved Staggered Quarks
• Quark Loop Effects with an Improved Staggered Action