Future foam: Nontrivial topology from bubble collisions in eternal inflation

Future foam: Nontrivial topology from bubble collisions in eternal inflation
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未来泡沫:永恒膨胀中泡沫碰撞的非平凡拓扑

DOI:
10.1103/physrevd.78.063538
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发表时间:
2008
期刊:
影响因子:
5
通讯作者:
Chen
Chen
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
R. Bousso;Ben Freivogel;Y. Sekino;S. Shenker;L. Susskind;I;Chen

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我们研究具有零宇宙常数和非平凡边界拓扑的口袋宇宙。这些都是由永恒膨胀中的气泡碰撞产生的。使用一个简化的尘埃碰撞模型,我们发现,任何属的边界可能发生。使用辐射壳模型,我们在薄壁极限进行分析研究,以显示存在的几何形状与一个单一的环形边界。我们给出了更高的属边界也可能发生的可扩展性参数。在具有任一属的一个边界的几何学中,类时观察者可以看到整个边界。也可能出现具有多个断开连接边界的几何图形。在具有两个边界的球形情况下,边界被地平线分开。我们的结果表明,Freivogel,Sekino,Susskind和Yeh提出的关于永恒暴胀的全息对偶描述应该包括对偶共形场论基空间亏格的求和.我们指出的特殊性,这种属扩张相比,字符串微扰系列。
We study pocket universes which have zero cosmological constant and nontrivial boundary topology. These arise from bubble collisions in eternal inflation. Using a simplified dust model of collisions we find that boundaries of any genus can occur. Using a radiation shell model we perform analytic studies in the thin-wall limit to show the existence of geometries with a single toroidal boundary. We give plausibility arguments that higher genus boundaries can also occur. In geometries with one boundary of any genus a timelike observer can see the entire boundary. Geometries with multiple disconnected boundaries can also occur. In the spherical case with two boundaries the boundaries are separated by a horizon. Our results suggest that the holographic dual description for eternal inflation, proposed by Freivogel, Sekino, Susskind and Yeh, should include summation over the genus of the base space of the dual conformal field theory. We point out peculiarities of this genus expansion compared to the string perturbation series.
DOI: 10.1103/physrevlett.88.181301
发表时间: 2001-11
影响因子: 8.6
作者:
D. Langlois;K. Maeda;D. Wands
通讯作者: D. Langlois;K. Maeda;D. Wands
DOI: 10.1103/physrevd.74.086003
发表时间: 2006-06
期刊: Physical Review D
影响因子: 5
作者:
Ben Freivogel;Y. Sekino;L. Susskind;Chen-Pin Yeh
通讯作者: Ben Freivogel;Y. Sekino;L. Susskind;Chen-Pin Yeh