With current experiments like WMAP and PLANCK reaching a percent precision in the determination of the relic density, this observable sets a stringent bound on the MSSM parameter space and is, thus, commonly used in global fits and parameter studies. Current theoretical predictions for the relic abundance, however, do not meet this precision yet. To improve this, I am contributing to the calculation of SUSYQCD corrections at nexttoleading order to (co)annihilation processes. Within this context, I have also performed different phenomenological analyses, e.g. with respect to light stop scenarios.


Combining cosmology and collider physics is not only interesting with respect to dark matter, but also regarding leptogenesis. In a modelindependent approach, we assessed the question whether it is possible to falsify leptogenesis at the LHC. The interconnection between lepton number violating processes, experimental observations at the collider, lowenergy and neutrino experiments, and deductions on the validity of leptogenesis or baryogenesis is also subject of current work.


My latest project was about flipped GUT inflation. Motivated by a small tensortoscalar ratio, observables point us to an inflationary potential which is related to the scale of grand unification. Therefore, it is interesting to further study to which extend it is possible that a phenomenological viable GUT model is able to explain this coincidence.

