Connections Between Lattice Gauge Theory and Chiral Perturbation Theory

Details Connections Between Lattice Gauge Theory and Chiral Perturbation Theory Connections Between Lattice Gauge Theory and Chiral Perturbation Theory

1997-10-24

arxiv.org/abs/hep-ph/9710468v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, latex, uses lamuphys.sty, 6 figures (postscript), talk given at the Workshop on Chiral Dynamics, Mainz, 1997. One re

Scientific paper

10.1007/BFb0104897

In this talk, I address the comparison between results from lattice QCD computations and Chiral Perturbation Theory (ChPT). I briefly discuss how ChPT can be adapted to the much-used quenched approximation and what it tells us about the special role of the $\eta'$ in the quenched theory. I then review lattice results for some quantities (the pion mass, pion scattering lengths and the $K^+\to\pi^+\pi^0$ matrix element) and what quenched ChPT has to say about them.

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