IA/U.Lisboa Seminar - Constraining Lorentz-violating dark matter with galaxy satellites - 18 maio 2016

Nordic Institute for Theoretical Physics

 

 

Lorentz symmetry is one of the most fundamental and solid symmetries of physics. However, there are several arguments by which such symmetry may not be exact with potentially important observable consequences. Although deviations are forced to be very small for standard model particles, there is more room for variations in the gravitational sector as well as in the interactions with dark matter.

In this talk, after presenting some general results, I will discuss the effects of a Lorentz violating vector field onto the dynamics of a dark matter satellite orbiting around its parental halo. In particular, I will highlight the observables features (form distortions in halo's shape to halo evaporation) and use Milky Way satellites as a way to place constraints on model's parameters.