Speaker
Dr
Yaser Tavakoli
(University of Warsaw)
Description
I will present the quantum evolution of scalar field modes on a quantum spacetime of a collapsing, homogeneous dust ball. Without field backreaction, quantum gravity resolves classical singularities, causing a bounce on the collapse background. Including backreaction, the emergent dressed geometry becomes mode-dependent, resembling a radiation fluid. I will examine the semiclassical dynamics of this mode-dependent background, noting that backreaction accelerates the bounce compared to a dust-only scenario. Additionally, matching interior and exterior regions at the dust boundary reveals a rainbow black hole geometry in the exterior spacetime.
Primary author
Dr
Yaser Tavakoli
(University of Warsaw)
Co-authors
Dr
Ali Parvizi
(University of Wrocław)
Prof.
Jerzy Lewandowski
(University of Warsaw)
Dr
Tomasz Pawlowski
(University of Wrocław)
