Astrophysical Aspects of Secretly Asymmetric Dark Matter

16 May 2019, 16:50
25m

Speaker

Can Kilic (University of Texas at Austin)

Description

I will present the phenomenology of the Secretly Asymmetric Dark Matter (SADM) scenario, where the DM relic abundance is set through an asymmetry generated in multiple DM flavors in the early universe, despite an unbroken and gauged DM number symmetry. There is a massless dark photon associated with the DM number symmetry, and DM flavors with asymmetries of opposite signs can form bound states. The existence of the dark photon as a relativistic degree of freedom, the formation and interaction of the bound states, and the dark acoustic oscillations in the early universe give rise to dynamical effects, which help address astrophysical and cosmological puzzles across a broad range of length scales.

Preferred Session Dark Matter

Author

Can Kilic (University of Texas at Austin)

Co-authors

Yuhsin Tsai (University of Maryland) Ms Cynthia Trendafilova (University of Texas at Austin) Christopher Dessert (University of Michigan)

Presentation materials