Quantum Gravity Seminar: Héloïse Delaporte

Speaker: Héloïse Delaporte (SDU)

Title: Non-singular quantum gravity inspired black holes: dynamical formation and characteristic image features

Spacetime coordinates: Wed @ 14:30, Auditorium A

Zoom Link: https://ucph-ku.zoom.us/j/9295289933?omn=67282578176

Abstract: In this talk, I will discuss how new-physics effects, motivated from quantum gravity theories, can impact the dynamical formation of spherically symmetric black holes and their image features. In the first part of the talk, I will show how a simple classical Vaidya model for spherically symmetric gravitational collapse can be regularised by new-physics effects encoded in a largely theory-agnostic approach. I will also draw an equivalence between a subclass of the upgraded time-dependent spacetimes and time-dependent spacetimes obtained via renormalisation group improvement in asymptotic safety. In the second part of the talk, I will highlight that the same modification of the spacetime metric renders stationary black holes non-singular and leads to a set of three specific image features. I will then generalise the discussion to generic image features of spacetimes beyond general relativity and investigate whether and how those features can be detected with future extensions of the Event Horizon Telescope.