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arXiv 1602.01152gr-qc
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在你的过去有没有负能量?

Was there a negative vacuum energy in your past?

George Chapline, James Barbieri

摘要:

将事件视界为量子临界相变的引力坍缩模型推广到解释可观测宇宙的起源,即我们今天所观测到的膨胀宇宙是由一个具有负宇宙学常数的平坦宇宙演化而来的.原则上,这使得我们可以从一个单一的参数推导出我们宇宙的所有特征:大爆炸前负真空能量密度的大小。本文介绍了一个简单的大爆炸模型,它使我们能够把宇宙微波背景的现今能量密度和温度涨落与现今暗物质的密度联系起来。这个大爆炸模型还做出了一个戏剧性的预测:暗物质主要由质量约为10^4太阳质量的致密物体组成。值得注意的是,这与数值模拟是一致的,数值模拟是关于暗物质密度的原始波动如何导致我们宇宙中物质分布的不均匀性。我们的大爆炸模型还允许产生一些质量大于10^4太阳质量的致密天体,这与结构形成的数值模拟是一致的,后者需要大质量的原始致密天体作为星系的种子,以解释星系的形态。

英文摘要:

A model for gravitational collapse where the event horizon is a quantum critical phase transition is extended to provide an explanation for the origin of the observable universe, where the expanding universe that we observe today was proceeded by a flat universe with a negative cosmological constant. In principal this allows one derive all the features of our universe from a single parameter: the magnitude of the pre-big bang negative vacuum energy density. In this paper a simple model for the big bang is introduced which allows us to relate the present day energy density and temperature fluctuations of the CMB, to the present day density of dark matter. This model for the big bang also makes a dramatic prediction: dark matter mostly consists of compact objects with a masses on the order of 10^4 solar masses. Remarkably this is consistent with numerical simulations for how primordial fluctuations in the density of dark give rise to the observed inhomogeneous distribution of matter in our universe. Our model for the big bang also allows for the production of some compact objects with masses greater than 10^4 solar masses, which is consistent with numerical simulations of structure formation which require massive primordial comapact objects as the seeds for galaxies in order to explain galactic morphologies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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