II. Institute for Theoretical Physics Luruper Chaussee 149, 22761 Hamburg, Tel: 8998- 2230, Fax: 8998-2267 Forschungsgebiete: Astroparticles, Algebraic Quantum Field Theory, Elementary Particle Phenomenology in the Standard Model and Beyond, QCD at Small x, String Theory and Supersymmetric Quantum Field Theories, High energy behaviour of Quantum Field and String Theories