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Unphysical phases in staggered chiral perturbation theory
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abstract
We study the phase diagram for staggered quarks using chiral perturbation theory. In beyond-the-standard-model simulations using a large number ($>8$) of staggered fermions, unphysical phases appear for coarse enough lattice spacing. We argue chiral perturbation theory can be used to interpret one of these phases. In addition, we show only three broken phases for staggered quarks exist, at least for lattice spacings in the regime $a^2\ll \Lambda^2_{\rm QCD}$.
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Cited by 1 Pith paper
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Center vortices in the novel phase of staggered fermions
Center vortices extracted from SU(3) lattice configurations capture the broken single-site shift symmetry of the staggered-fermion artifact phase, with only plaquettes spanning the broken dimension affected.
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