Recent developments in quark nuclear physics
Special Research Centre for the Subatomic Structure of Matter and Department of Physics and Mathematical Physics, University of Adelaide, 5005, Adelaide, Australia
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We provide an overview of recent work exploring the quark-mass dependence of hadronic observables and the associated role of chiral non-analytic behavior due to the meson-cloud of hadrons. In particular, we address an issue of great current interest, namely the degree of model independence of results obtained through a controlled extrapolation of lattice QCD simulation results. Physical insights gained from this research are highlighted. We emphasize how chiral effective field theory formulated with a finite-range regulator provides a reliable and model-independent extrapolation to the physical world.
© Società Italiana di Fisica and Springer-Verlag, 2003