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Improved flavor symmetry in Kogut-Susskind fermion actions

K. Orginos·R. Sugar·D. Toussaint
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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.

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K. Orginos, R. Sugar, D. Toussaint. 1999-09-10. Improved flavor symmetry in Kogut-Susskind fermion actions. https://doi.org/10.1016/s0920-5632(00)91832-2

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