Wallbott, Paul C.Paul C.Wallbott2023-02-092020-03-162023-02-092019http://nbn-resolving.de/urn:nbn:de:hebis:26-opus-149910https://jlupub.ub.uni-giessen.de/handle/jlupub/10437http://dx.doi.org/10.22029/jlupub-9821In this thesis we present the first calculation of heavy-light four-quark states in the Bethe-Salpeter and Dyson-Schwinger approach. Furthermore, we describe the lightest scalar quark-antiquark state as a dynamical resonance within the same framework.enIn Copyrightddc:530