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Chiral condensate from the twisted mass Dirac operator spectrum
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abstract
We present the results of our computation of the chiral condensate with $N_f=2$ and $N_f=2+1+1$ flavours of maximally twisted mass fermions. The condensate is determined from the Dirac operator spectrum, applying the spectral projector method proposed by Giusti and Luscher. We use 3 lattice spacings and several quark masses at each lattice spacing to perform the chiral and continuum extrapolations. We study the effect of the dynamical strange and charm quarks by comparing our results for $N_f=2$ and $N_f=2+1+1$ dynamical flavours.
Forward citations
Cited by 2 Pith papers
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Impact of Dynamical Charm Quark and Mixed Action Effect on Light Hadron Masses and Decay Constants
A dynamical charm quark does not measurably change light-hadron masses or decay constants, and a clover-on-HISQ mixed action reduces O(a^2) discretization errors in the continuum limit.
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Chiral Symmetry Breaking on the Lattice
A review of chiral symmetry breaking in QCD on the lattice, deriving the Banks-Casher relation and summarizing lattice results for the chiral condensate.
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