Forming primordial black holes
- Date
- November 11 (Mon) at 14:00 - 15:30, 2024 (JST)
- Speaker
-
- Zachary Picker (Postdoctoral Researcher, University of California, Los Angeles, USA)
- Language
- English
- Host
- Ryo Namba
Primordial black holes (PBHs) are black holes which form in the early universe. Not only are PBHs good dark matter candidates, but they have a wide range of fascinating phenomenology (even if they are only a fraction of the dark matter). In this talk I will review a somewhat under-discussed aspect of the PBH gospel---their formation mechanisms. In fact, there is a wide variety of ways to form PBHs of different sizes and abundances, and many of our favorite BSM theories can have PBHs in their spectra. I will then discuss some of our particular upcoming research on PBH formation, where attractive Yukawa forces in a dark sector can lead to the early formation of dense dark structures called Fermi balls which can collapse to black holes, with novel cosmological implications.
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