The Good, the Bad, and the Ugly of Gravity and Information

Understand

Various contenders for a complete theory of quantum gravity are at odds with each other.

• This is in particular seen in the ways they relate to information and black holes, and how to effectively treat quantization of the background spacetime.
• Modern perspectives on black hole evaporation suggest that quantum gravity effects in the near-horizon region can perturb the local geometry.
• The approaches differ, however, in the time scale on which one can expect these effects to become important.