Dark matter and black holes

Session

Plenaries 10-11: Michael Zantedeschi and Haibo Yu

4 Dec 2025, 14:00

Lecture Hall (Kavli IPMU)

Conveners

Plenaries 10-11: Michael Zantedeschi and Haibo Yu

• Chair:

229. Evaporating black holes: how the burden of their memory stabilizes them

Michael Zantedeschi

04/12/2025, 14:00

The memory burden effect describes how an object's stored information resists its own decay. This mechanism is especially pronounced in saturons—systems that saturate unitarity bounds on entropy—with black holes providing the prime example. I will show how memory burden can halt Hawking evaporation and dynamically stabilize black holes against complete decay. Crucially, this phenomenon is not...

230. Seeding Supermassive Black Holes from the Dark Sector

Haibo Yu

04/12/2025, 14:30

I will present a novel mechanism for forming supermassive black holes through dark matter dynamics. In the self-interacting dark matter framework, halos can undergo gravothermal collapse, producing black hole seeds that subsequently grow via baryonic Eddington and dark Bondi accretion. This process can naturally account for the massive black holes observed at high redshift, including the JWST...