Covariant Lemaître-Tolman-Bondi collapse in models of loop quantum gravity

Models of gravitational collapse provide important means to test whether nonclassical space-time effects, motivated, for instance, by quantum gravity, can be realized in generic ways in physically relevant situations. Here, a detailed analysis of marginally bound Lemaître-Tolman-Bondi space-times is given in emergent modified gravity, which in particular includes a covariant formulation of holonomy modifications usually considered in models of loop quantum gravity. As a result, generic collapse in this setting is shown to imply a physical singularity that removes the bouncing behavior seen in vacuum space-times with the same type of modifications.