Speaker
Francesco Fazzini
(University of New Brunswick)
Description
Classical star collapse leads generally to shell-focusing singularities, according to Penrose singularity theorems. However, once non-perturbative quantum gravitational effects are taken into account, the collapsing star core undergoes a bounce when its energy density becomes planckian. In this talk I will show that such bounce of the core is generally followed by the formation of shell-crossing singularities on the outer shells of the star for a very large class of star configurations, including dust (in the marginally and non marginally bound case), ideal and non ideal fluids. This gives a central role to shell-crossing singularities in effective gravitational star collapse and black hole physics.
Primary author
Francesco Fazzini
(University of New Brunswick)
