Islands in multiverse models
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13130_2021_Article_17253.pdf
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Author(s)
Aguilar-Gutierrez, Sergio E.
Chatwin-Davies, Aidan
Hertog, Thomas
Pinzani-Fokeeva, Natalia
Robinson, Brandon
Date Issued
November 2021
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2021 Nov 29;2021(11):212
Version
Final published version
Abstract
We consider multiverse models in two-dimensional linear dilaton-gravity theories as toy models of false vacuum eternal inflation. Coupling conformal matter we calculate the Von Neumann entropy of subregions. When these are sufficiently large we find that an island develops covering most of the rest of the multiverse, leading to a Page-like transition. This resonates with a description of multiverse models in semiclassical quantum cosmology, where a measure for local predictions is given by saddle point geometries which coarse-grain over any structure associated with eternal inflation beyond one’s patch.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP11(2021)212
