Chiral extrapolations
نویسنده
چکیده
The title ‘Chiral extrapolations’ of this contribution refers more precisely to chiral extrapolations of lattice QCD data. We shall deal with low-energy aspects of QCD, which are not accessible to ordinary weak-coupling perturbation theory. Possible alternatives to weak-coupling perturbation theory in the low-energy domain of QCD include the investigation of specific models, Monte Carlo simulations of lattice regularised QCD, and chiral effective field theories (CHEFT), the latter being low-energy theories which incorporate the constraints from (spontaneously broken) chiral symmetry. It is the comparison of CHEFT (or chiral perturbation theory (CHPT)) with results from lattice QCD simulations that will be the subject of the present paper.
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