Seminarium Teorii Względności i Grawitacji

Recently, a substantial amount of work has been conducted on the spherically symmetric dust collapse within the framework of effective loop quantum gravity. I will outline those results as well as explore more general collapse scenarios with pressure. Numerical investigations show that the shell-focusing singularity characterizing the end state of any classical stellar collapse is here resolved by quantum gravitational effects and replaced by a bounce of the star. However, they also show that shell-crossing singularities remain a general feature of these models and that the inclusion of pressure does not alter the qualitative picture emerging from semiclassical models of inhomogeneous dust collapse.