Partially quenched chiral perturbation theory and numerical simulations

Details Partially quenched chiral perturbation theory and numerical simulations Partially quenched chiral perturbation theory and numerical simulations

2003-02-19

arxiv.org/abs/hep-lat/0302011v2

Phys.Lett. B561 (2003) 102-110

Physics

High Energy Physics

High Energy Physics - Lattice

11 pages, 3 figures; discussion of the results in section 3 extended

Scientific paper

The dependence of the pseudoscalar meson mass and decay constant is compared to one-loop Partially Quenched Chiral Perturbation Theory (PQChPT) in a numerical simulation with two light dynamical quarks. The characteristic behaviour with chiral logarithms is observed. The values of the fitted PQChPT-parameters are in a range close to the expectation in continuum in spite of the fact that the lattice spacing is still large, namely a=0.28 fm.

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