Partial Restoration of Flavor Symmetry for Chiral Staggered Fermions
arXiv:hep-lat/9809026 · doi:10.1016/S0920-5632(99)85035-X
Abstract
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.
LATTICE98(spectrum) 3 pages, 1 figure
References in corpus (1)
Cited by in corpus (5)
- Partial Flavor Symmetry Restoration for Chiral Staggered Fermions
- Hadron masses in QCD with one quark flavour
- Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action
- Chiral perturbation theory for partially quenched twisted mass lattice QCD
- Twisted mass lattice QCD with non-degenerate quark masses