Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 21: Plenary III

HK 21.1: Eingeladener Hauptvortrag

Dienstag, 17. März 2009, 09:00–09:30, Audi-Max

Lattice QCD in Hadron Physics — •Andreas Schäfer — Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany

In recent years Lattice QCD became a most valuable source of information for many aspects of hadron structure which cannot be directly extracted from experiment. Basically, today one performs lattice calculations of experimentally known quantities to estimate systematic errors and then trusts lattice results for similar but unknown quantities within these uncertainties. Typical examples are the spatial structure of hadrons, the role of strange quarks in nucleon structure, the nature (exotic or non-exotic) of hadronic states, and the spin structure of hadrons. Enormous progress was made in nearly all aspects of such calculations, be it algorithms or hardware or the physics interpretation etc. Many crucial topics for modern high precision lattice calculations have to be delegated to talks in the parallel sessions for lack of time, e.g. the crucial role of chiral perturbation theory and the spectroscopy of excited hadrons.