Superfluidity and superconductivity in neutron stars and nuclear matter

Pairing, superfluidity and superconductivity lie at the heart of many phenomena in solid state physics, quantum liquids, nuclear physics and the quantum many-body problem in general. This thesis project deals with realistic ab initio predictions of the microscopic physics of nucleonic superfluid components in the interiors of neutron stars. This is crucial to a quantitative understanding of several aspects of neutron stars and dense m atter physics, such as the neutrino cooling mechanisms that operate immediately after their birth in supernova events, as well as the magnetic properties, vortex structure, rotational dynamics, and pulse timing irregularities of these superdense stellar o bjects. Furthermore, the formalism to be developed will have important applications to problems in the solid state and the physics of other quantum liquids and dilute Fermi systems. To achieve such goals, the thesis project involves the solution of the Gorkov equations coupled with a renormalization scheme of the inmedium interaction, summing e.g., screening contributions to infinite order. This has never been done in a self-consiste nt way. The present thesis project may therefore provide important contributions to quantum-machanical studies of many interacting particles.