Talk presented by Konstantinos Orginos

Parallel Session: Improvement and Renormalization III

Friday July 2nd, 15.10 - 15.30, Room B

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 $O(a^2)$ errors. The spectrum of all the pions is computed and used as a measure of flavor symmetry violation. Finally, the Naik term is introduced for restoring rotational symmetry.

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