Description
Chair: Thomas Bartsch
Primordial black holes could play a significant role in cosmological history, yet fully consistent treatments of their evolution remain limited. The well-known paradigm of slow-roll inflation treats a slowly evolving scalar field in an isotropic universe, and some authors have extended this to include a spherically symmetric black hole. In this talk, I will discuss recent analytic progress on...
Consider an electrically charged particle orbiting a spinning black hole, described by the Kerr spacetime. As the charged particle moves it undergoes a radiation-reaction process, driven by the electromagnetic force, causing it to lose energy and angular momentum, inspiraling towards the black hole until the final plunge. In this work we calculate how the orbital parameters for eccentric...
Among mechanisms for generating the baryon asymmetry of the universe,
leptogenesis is attractive since it simultaneously explains the small
neutrino masses via the seesaw mechanism. Experiments offer some
valuable constraints, but the parameter space of even minimal
leptogenesis models are high-dimensional and difficult to probe
directly. However the parameter space of leptogenesis models...
