Relaxing to three dimensions.
Relaxing to three dimensions.
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放松到三个维度。
DOI：
10.1103/physrevlett.95.161601
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发表时间：
2005
影响因子：
8.6
通讯作者：
L. Randall
中科院分区：
文献类型：
--
作者：
A. Karch;L. Randall
我们提出了一种新的选择原则来区分可能的真空，我们称之为“松弛原则”。这个想法是，宇宙会通过其宇宙演化自然地在可能的真空中进行选择，并且具有最大填充分数的配置是最有可能的。我们将这个想法应用于空间维数问题。我们证明，在传统（但更高维）的弗里德曼-罗伯逊-沃克演化下，充满相同数量的膜和反膜的宇宙自然会以 3 膜和 7 膜为主。我们将展示为什么这可以解释我们可见宇宙中所经历的维度数量。
We propose a new selection principle for distinguishing among possible vacua that we call the "relaxation principle." The idea is that the Universe will naturally select among possible vacua through its cosmological evolution, and the configuration with the biggest filling fraction is the likeliest. We apply this idea to the question of the number of dimensions of space. We show that under conventional (but higher-dimensional) Friedmann-Robertson-Walker evolution, a universe filled with equal numbers of branes and antibranes will naturally come to be dominated by 3-branes and 7-branes. We show why this might explain the number of dimensions that are experienced in our visible Universe.