Dynamics of Apparent Horizons in Quantum Gravitational Collapse
We 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.
KeywordsApparent Horizon Gravitational Collapse Trap Surface Loop Quantum Gravity Hamiltonian Constraint
The authors would like to thank R. Goswami and J. Velhinho for the useful discussion and suggestions. YT is supported by the FCT (Portugal) through the fellowship SFRH/BD/43709/2008.