Spacetime emergence inside black holes

This video is part of the PROTEUS project that has received funding from the European Research Council (ERC) under the Horizon 2020 research and innovation programme (Grant agreement No. 758145)

The problem of the disappearance of spacetime has long been recognized as one of the most pressing philosophical and conceptual problems facing theories of quantum gravity. In this talk, my goal will be to look at this issue from the point of view of AdS/CFT, focusing in particular on the relationship between the non perturbative definition of quantum gravity given by the duality and the semiclassical description of gravity given by the effective field theory in the bulk. By thinking in particular about the interior of black holes and the reconstruction map connecting their effective description to their fundamental one, I come to the surprising conclusion that the standard answer to the problem of the disappearance of spacetime, i.e. emergence, is inadequate in this case, at least as standardly formulated. Rather, I suggest that a more flexible and less ontologically demanding approach is required, whose basic features I outline.