Speaker
Zachary Picker
Description
It has long been known that if the dark sector includes an attractive Yukawa force, dark halos can readily form, well before matter-radiation equality. However, the same scalar field which mediates the Yukawa force also allows these structures to radiatively cool, causing them to further collapse. I will discuss the evolution of these dark halos as they cool into Fermi balls and even primordial black holes, touching on the potentially rich phenomenology of these compact dark structures.
Author
Zachary Picker
Co-authors
Alexander Kusenko
Yifan Lu