Islands in proliferating de Sitter spaces
- 주제(키워드) 2D Gravity , Black Holes , de Sitter space
- 등재 SCIE, SCOPUS
- OA유형 gold, Green Submitted
- 발행기관 Springer Science and Business Media Deutschland GmbH
- 발행년도 2023
- URI http://www.dcollection.net/handler/ewha/000000208735
- 본문언어 영어
- Published As https://doi.org/10.1007/JHEP05(2023)098
초록/요약
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. © 2023, The Author(s).
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