Speaker
Yu Komiya
Description
We investigate an early history in which topological defects are dynamical within an axion cosmology post-inflation, motivated by the increasing popularity of models predicting primordial black holes formed of defects contributing to present-day dark matter content. We highlight the capabilities of the axionic context, and identify unique features pertaining to the interactions between defects coexisting at an early time, such as monopole-domain wall systems. In particular, our work aims to emphasise non-standard scenarios supported by well-motivated theories, with which we may probe fundamental physics both observationally and analytically.
