Partial Restoration of Flavor Symmetry for Chiral Staggered Fermions

Details Partial Restoration of Flavor Symmetry for Chiral Staggered Fermions Partial Restoration of Flavor Symmetry for Chiral Staggered Fermions

1998-09-04

arxiv.org/abs/hep-lat/9809026v1

Nucl.Phys.Proc.Suppl. 73 (1999) 240-242

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE98(spectrum) 3 pages, 1 figure

Scientific paper

10.1016/S0920-5632(99)85035-X

At non-zero lattice spacing the flavor symmetry of staggered fermions is
broken to a discrete subgroup. We show that in the chiral limit the flavor
symmetry of the pion effective Lagrangian enlarges to an SO(4) subgroup of the
continuum SU(4) symmetry. This provides an explanation for observed
degeneracies in the pion spectrum.

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