Tavakoli, YaserDapor, AndreaMarto, João2018-11-262018-11-262014978-3-642-40156-5http://hdl.handle.net/10400.6/6505We study the gravitational collapse of a massless scalar field within the effective scenario of loop quantum gravity. Classical singularity is avoided and replaced by a quantum bounce in this model. It is shown that, quantum gravity effects predict a threshold scale bellow which no horizon can form as the collapse evolves towards the bounce.engGravitational CollapseLoop Quantum Gravitybook part10.1007/978-3-642-40157-2_65