(Color-)Magnetic Defects in Dense Nuclear and Quark Matter

Nucleons and possibly quarks in compact stars form an interacting multicomponent system of a (color-)superconductor and a superfluid. Due to the strong magnetic field in most neutron stars, magnetic defects like flux tubes form. By starting from a field-theoretical, bosonic model, the phase structure of these multicomponent systems can be studied. Special emphasis is put on the type-I/type-II transition using lattice calculations. Additionally, new defects in color flavor locked quark matter are studied within the presented model.