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arXiv 2008.01878gr-qc
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能源条件允许永恒的通货膨胀

Energy conditions allow eternal inflation

Eleni-Alexandra Kontou, Ken D. Olum

摘要:

永恒的暴胀需要哈勃体积中的能量向上波动,这似乎违反了能量条件。特别是,在膨胀时空中的标量场应该服从平均零能量条件,这似乎排除了永恒的膨胀。在这里,我们展示了当能量条件(甚至零能量条件)被遵守时,永恒的暴胀是如何可能的。关键点在于,能量条件限制了任何单个量子态的演化,而永恒暴胀的过程涉及重复选择前一个态的子扇区,因此不存在违反条件的单个态。

英文摘要:

Eternal inflation requires upward fluctuations of the energy in a Hubble volume, which appear to violate the energy conditions. In particular, a scalar field in an inflating spacetime should obey the averaged null energy condition, which seems to rule out eternal inflation. Here we show how eternal inflation is possible when energy conditions (even the null energy condition) are obeyed. The critical point is that energy conditions restrict the evolution of any single quantum state, while the process of eternal inflation involves repeatedly selecting a subsector of the previous state, so there is no single state where the conditions are violated.

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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