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How good is the quenched approximation of QCD?

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Abstract

The quenched approximation for QCD is, at present and in the foreseeable future, unavoidable in lattice calculations with realistic choices of the lattice spacing, volume and quark masses. In this talk, I review an analytic study of the effects of quenching based on chiral perturbation theory. Quenched chiral perturbation theory leads to quantitative insight on the difference between quenched and unquenched QCD, and reveals clearly some of the diseases which are expected to plague quenched QCD.

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  1. Department of Physics, Washington University, 63130, St. Louis, MO, USA

    Maarten F. L. Golterman

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  1. Maarten F. L. Golterman
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Golterman, M.F.L. How good is the quenched approximation of QCD?. Pramana - J. Phys. 45 (Suppl 1), 141–154 (1995). https://doi.org/10.1007/BF02907971

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