English

Island mirages

High Energy Physics - Theory 2022-09-07 v2 General Relativity and Quantum Cosmology

Abstract

We point out a loophole in the proof that the Island Finder conditions are sufficient for the existence of islands. We explore examples which satisfy the conditions, but have no islands, which we call island mirages. We also describe and give resolutions to two new puzzles associated with islands, including a direct tension with the quantum Bousso bound.

Cite

@article{arxiv.2206.06144,
  title  = {Island mirages},
  author = {Andrew Rolph},
  journal= {arXiv preprint arXiv:2206.06144},
  year   = {2022}
}

Comments

26 pages, 7 figures; v2: minor corrections and clarifications

R2 v1 2026-06-24T11:48:54.088Z