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München 2019 – scientific programme

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 7: Eichtheorien

MP 7.1: Invited Talk

Wednesday, March 20, 2019, 11:00–11:40, HS 23

String-localized potentials - a Hilbert space approach to gauge theories — •Karl-Henning Rehren — Institut für Theoretische Physik, Uni Göttingen

For the perturbative description of interactions (like QED or weak interactions) one may use vector potentials that are defined on the physical Hilbert space, but enjoy weaker properties of covariance and locality than are usually required for observables. This increases the mathematical challenges for renormalization, but provides new structural insights and opens new paths towards theories with higher spin.

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