# nLab entanglement island proposal for black hole paradox -- references

Entanglement island proposal for BH information paradox

### Entanglement island proposal for BH information paradox

#### Claims

Claim that the proper application of holographic entanglement entropy to the discussion of Bekenstein-Hawking entropy resolves the apparent black hole information paradox:

#### Criticism

• Anna Karlsson, Concerns about the replica wormhole derivation of the island conjecture (arXiv:2101.05879)

• Harvendra Singh, Islands and Icebergs contribute nothing to the Page curve (System with a symmetrical bath) [arXiv:2210.13970]

Argument that the would-be proof of the island conjecture secretly works only for massive gravity:

reviewed in:

• Hao Geng, Recent Progress in Quantum Gravity: Karch-Randall Braneworld, Entanglement Islands and Graviton Mass, Washington (2022) [hdl:1773/49427

Claim that the whole argument relies on the false assumption that that the split property holds for quantum gravity:

Review in:

• Nirmalya Kajuri, Of Islands, Holograms and Saving Quantum Physics From a Black Hole Paradox, Science – The Wire (Nov 2022)

$[\ldots]$ a few sceptics have argued that while the calculations are correct, they don’t help resolve the black hole information-loss paradox. The troubles stem from the reservoir attached to the anti-de Sitter universe. The physicists who authored the island papers assumed that gravity stopped at the boundary of the anti-de Sitter space and didn’t enter the reservoir. This is not an innocuous assumption. $[\ldots]$ The key takeaway is that the island way to recover information and save unitarity works perfectly well – if you slightly modify Einstein’s theory of gravity. These criticisms have been around for some two years now, and physicists are yet to resolve them in print. $[\ldots]$ physicists continue to publish papers by the hundreds about the entanglement islands but few attempt to answer whether the islands are compatible with the Einsteinian gravity of our universe. $[\ldots]$