AdS cycles in eternally inflating background
type: Item
instance of: scholarly article
title: AdS cycles in eternally inflating background
zbMATH Open document ID: 1307.83040
DOI: 10.1088/0264-9381/31/17/175004
author: Zhi-Guo Liu
author: Yun-Song Piao
published in: Classical and Quantum Gravity
publication date: 2014-10-17T00:00:00Z
full work available at URL: https://arxiv.org/abs/1404.5748
Mathematics Subject Classification ID: 83C75
Mathematics Subject Classification ID: 83F05
Mathematics Subject Classification ID: 83C25
Mathematics Subject Classification ID: 81T20
Mathematics Subject Classification ID: 83C45
Mathematics Subject Classification ID: 83C05
zbMATH DE Number: 6358172
zbMATH Keywords: cyclic cosmology
zbMATH Keywords: perturbation
zbMATH Keywords: eternal inflation
zbMATH Keywords: anti de Sitter
zbMATH Keywords: de Sitter
zbMATH Keywords: bounce
zbMATH Keywords: quantum gravity corrections
zbMATH Keywords: initial conditions
MaRDI profile type: Publication
OpenAlex ID: W3105678327
arXiv ID: 1404.5748
review text: In the eternal inflation scenario, an infinite number of bubble universes with either de Sitter or anti de Sitter vacua are created. The anti de Sitter bubbles collapse rapidly. In this scenario it has proved challenging to argue that the natural conditions for getting correctly the primordial perturbations are predominant. A modification to this scenario has been proposed based on the fact that quantum gravity corrections may lead the collapsing anti de Sitter bubbles to ``bounce''. This alters the measures of initial conditions and may make more favorable the emergence of primordial perturbations of correct physical nature. However, it might be the case that after the bounce the anti de Sitter universe recollapses again. This paper shows that due to the amplification of the field fluctuations, the bubble universe going through anti de Sitter cycles will fragment leading to a number of additional bubble universes. This will help eternal inflation populate the whole landscape, wherever it happens initially.
reviewed by: Jorge Pullin
description: scientific article; zbMATH DE number 6358172