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Staggered Chiral Perturbation Theory

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arxiv hep-lat/0308036 v1 pith:I7FB5MUJ submitted 2003-08-28 hep-lat

C. Aubin , C. Bernard This is my paper · ORCID
classification hep-lat
keywords staggeredchiralcorrectionsdecayloopperturbationquenchedtheory
verification ladder T0 review T1 audit T2 compute T3 formal
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We discuss how to formulate a staggered chiral perturbation theory. This amounts to a generalization of the Lee-Sharpe Lagrangian to include more than one flavor (i.e. multiple staggered fields), which turns out to be nontrivial. One loop corrections to pion and kaon masses and decay constants are computed as examples in three cases: the quenched, partially quenched, and full (unquenched) case. The results for the one loop mass and decay constant corrections have already been presented in Ref. [1].

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  1. Logarithmic corrections to O($a^2$) effects in lattice QCD with unrooted Staggered quarks

    hep-lat 2025-01 conditional novelty 7.0 of 10

    Spectral lattice artifacts for unrooted staggered quarks scale as a^2 [2 b0 gbar^2(1/a)]^gamma, with the smallest exponents near -0.3 for N_f=0,4 and near -0.9 and -2.6 for N_f=8,12.

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