Towards an effective theory of structure formation

Who: Jesus Zavala (Niels Bohr Institute)
When: Monday, September 22, 2014 at 14:15
Where: The CP³ meeting room

Although there is substantial gravitational evidence for the existence of dark matter, its nature as a new particle beyond the Standard Model remains one of the biggest mysteries in modern astrophysics. The favourite theoretical model, the Cold Dark Matter (CDM) paradigm, assumes that non-gravitational dark matter interactions are irrelevant for structure formation, and thus, the observed properties of galaxies are connected to the complex physical processes taking place between the dierent phases of the ordinary matter in a purely gravitational dark matter background.

There is however no strong evidence for the strong CDM hypothesis. Significant departures from this model are allowed by observations and have important implications on how galaxies form and evolve, particularly in their inner phase-space structure. In this talk I will summarize the current status of this topic, focusing on the effective parameters of a more generic structure formation theory with a richer dark matter phenomenology.