The Nucleon-Nucleon Interaction in a Chiral Constituent Quark Model
  This thesis constitute an investigation of finding out whether or not the Goldstone Boson Exchange (GBE) model can give rise to a short-range repulsion in the the nucleon-nucleon (NN) interaction. We used two different approaches based on the Born-Oppenheimer approximation and taking into account Harvey's transformations. Next, we study the NN interaction in a dynamical way using the resonating group method (RGM). We present results for the s-wave phase shifts in the NN scattering. We also introduce some necessary extensions of the GBE model like the contribution of the sigma-meson exchange interaction between quarks or the tensor force and discuss the comparison with the One Gluon Exchange (OGE) results and experiment. 
D. Bartz