GQFI-UGent-WST Seminar: Dominik Neuenfeld "Holonomy Constraints in Double Holography"
In this talk, Dominik Neuenfeld (Perimeter) discusses the relation between the d-dimensional BCFT and CFT+gravity descriptions of double holography. In both descriptions entropies can be computed using the RT formula in a (d+1)-dimensional bulk. However, Dominik argues that the standard assumptions about entanglement wedge reconstruction suggest that the homology condition for RT surfaces depends on which of the "boundary" formulations is taken. After discussing implications for the relation between von Neumann entropy and the entropy computed using the island formula, Dominik shows how the island formula arises in a simple qubit model. Based on those results he speculates about the emergence of semi-classical gravity from quantum gravity.
The Virtual Seminar Series “GQFI-Ghent University-Warsaw String Theory” (GQFI-UGent-WST) is a joint initiative between the strings/holography groups at the Albert Einstein Institute (AEI) in Potsdam, Ghent University and the University Warsaw. The calendar for upcoming GQFI-UGent-WST seminars can be found here: https://gqfi.aei.mpg.de/node/3.
This talk is primarily based on arXiv:2105.01130 [hep-th] (https://arxiv.org/abs/2105.01130) and arXiv:2104.02801 [hep-th] (https://arxiv.org/abs/2104.02801).
This talk was recorded on October 5th, 2021 at the Albert Einstein Institute in Potsdam-Golm.