Islands in proliferating de Sitter spaces

A bstract We study two-dimensional de Sitter universe which evolves and proliferates according to the Ginsparg-Perry-Bousso-Hawking mechanism, using Jackiw-Teitelboim gravity coupled to conformal matter. Black holes are generated by quantum gravity effects from pure de Sitter space and then evaporat...

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Bibliographic Details
Published in:The journal of high energy physics 2023-05, Vol.2023 (5), p.98-25, Article 98
Main Authors: Baek, Jong-Hyun, Choi, Kang-Sin
Format: Article
Language:English
Subjects:
2D Gravity
Black Holes
Classical and Quantum Gravitation
de Sitter space
Dilatons
Elementary Particles
Evaporation
Geometry
High energy physics
Islands
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum gravity
Quantum Physics
Radiation
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Universe
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Summary:A bstract We study two-dimensional de Sitter universe which evolves and proliferates according to the Ginsparg-Perry-Bousso-Hawking mechanism, using Jackiw-Teitelboim gravity coupled to conformal matter. Black holes are generated by quantum gravity effects from pure de Sitter space and then evaporate to yield multiple disjoint de Sitter spaces. The back-reaction from the matter CFT is taken into account for the dilaton as a function of the temperature of the CFT. We discuss the evaporation of black holes and calculate the finite temperature entropy of an inflating region using the island formula. We find that the island moves towards the apparent horizon of the black hole as the temperature increases. The results are applied to the case of multiple evaporating black holes, for which we suggest multiple islands.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP05(2023)098