Improved flavor symmetry in Kogut-Susskind fermion actions

Details Improved flavor symmetry in Kogut-Susskind fermion actions Improved flavor symmetry in Kogut-Susskind fermion actions

1999-09-10

arxiv.org/abs/hep-lat/9909087v1

Nucl.Phys.Proc.Suppl.83:878-880,2000

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, contribution to LATTICE-99

Scientific paper

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.

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