[en] The author describes the application of the quark model for the description of nuclear structure. (HSI)

[en] QCD leads to a new and more satisfactory interpretation of Nuclear Shell Structure. Characteristic difficulties and certain inconsistencies of the conventional picture may be eliminated. (orig.)

[en] The aim of this contribution is to indicate that quantum chromodynamics (QCD) may lead to a new approach for a theoretical interpretation of fundamental nuclear properties. Within the framework of a first example it is shown that the characteristic features (including numerical values) of nuclear shells-structure which in conventional theory were determined with the help of rather extended and not quite satisfactory calculations, may be understood much more directly from a general quark theoretical viewpoint

No abstract available

[en] In this contribution I report on our work which relates nuclear structure (in particular shell structure) to the general principles of present day gauge theory. (orig./HSI)

[en] A short discussion is given of the importance of experimental nuclear mass determination in the illucidation of nuclear matter binding and the subsequent variation in nuclear structure throughout the periodic table

[en] These proceedings contain the articles presented at the named symposium. They deal with the calculation of hadronic mass spectra by lattice QCD, the description of nuclear structure by the quark model, bag models with solitons, the quark structure of nuclei, the description of the nucleon-nucleon interaction in the framework of the quark model and the comparison of the boson-exchange description of nuclear forces with the quark model approximation. (HSI)

[en] The scope of this short contribution is to show that quark theoretical viewpoints do not only lead to a deeper understanding of the conventional theory but that they open at the same time a new and to some extent more direct way for the understanding of nuclear properties. (orig./HSI)

[en] The level scheme of F¹⁹ plays by now an important role in the experimental determination of the so-called weak parity violation. This is related to the fact that the low lying part of this spectrum has a most characteristic structure: it consists of a relatively dense system of so-called parity doublets, i.e. on 3 pairs of levels with the same angular momentum but with opposite parity (1/2^+-, 5/2^+-, 3/2^+-). The assignments are in perfect contradiction to the conventional sequence expected from shell structure which, in turn, would yield only the levels with positive parities in this energy region. In order to understand this particular system of assignments, the authors poses here a special coupling scheme, namely the so-called Parity Mixing. (Auth.)

[en] It is shown that the boson theoretical interpretation of nuclear forces nessecitates the introduction of bosonic variables within the state function of nuclear matter. In this framework the 2-boson exchange plays a decisive role and calls for the introduction of special selfenergy diagrams. This generalized scheme is discussed with the help of a solvable field theoretical model. (orig.)