Diego Rubiera-Garcia
IA
Abstract: Black holes are the end-point of gravitational collapse of fuel-exhausted stars beyond a certain mass, and are well described in the context of General Relativity (GR) by three parameters: mass, charge and angular momentum. However, GR also predicts the unavoidable existence of space-time singularities deep inside black holes, which poses a major threat to predictability and determinism of our physical theories. These two aspects (existence of black holes and space-time singularities) seem to come together within GR without possibility of disentanglement. This way, extensions of GR have been proposed in the literature to avoid such a situation. In this talk I will explain how the singularity problem can be resolved within one of such extensions, which is borrowed from an analogy with defected crystalline structures in solid state physics. I will further show how physical observers could fall into such a black hole but run away unscathed.
