PIRSA:23050121 Conference Quantum Gravity

DOI10.48660/23050121

Conference/School: Quantum Spacetime in the Cosmos: From Conception to Reality

Yoshida, B. (2023). Causality at the End-of-World. Perimeter Institute. https://pirsa.org/23050121

Yoshida, Beni. Causality at the End-of-World. Perimeter Institute, May. 10, 2023, https://pirsa.org/23050121 

@misc{ pirsa_PIRSA:23050121,
  doi = {10.48660/23050121},
  url = {https://pirsa.org/23050121},
  author = {Yoshida, Beni},
  keywords = {Quantum Gravity, Cosmology},
  language = {en},
  title = {Causality at the End-of-World},
  publisher = {Perimeter Institute},
  year = {2023},
  month = {may},
  note = {PIRSA:23050121 see, \url{https://pirsa.org}}
}

Abstract

The success of the AdS/CFT correspondence motivates a holographic approach for spacetime beyond AdS, including our own universe. One possible method involves using an asymptotically-AdS holography and introducing a finite radial cutoff by inserting an End-of-World (EoW) brane. However, previous studies have shown that this leads to nonlocal effects on the boundary and violates entanglement sub-additivity. In this work, we address these issues by examining a two-particle scattering process through the lens of holographic quantum tasks. Our findings suggest that connectedness of entanglement wedge does indeed require nonlocal domain of dependence, but that violation of sub-additivity can be avoided. We also discuss an important question that arises from our results, namely whether the non-locality on the EoW brane is real or apparent. We argue that it is the latter. This talk is based on ongoing work with Takato Mori.

Resources

Next talk

Related Talks