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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1105.0244hep-thgr-qchep-ph
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在多元宇宙中进行预测

Making predictions in the multiverse

Ben Freivogel

摘要:

我描述了认为我们生活在一个永恒膨胀的多元宇宙中的理由,其中可观察到的自然“常数”因地而异。在这种背景下进行预测的主要障碍是,我们必须调节永恒通货膨胀的无限性。我回顾了一些拟议的监管机构或措施。最近的研究排除了一些措施,表明它们与观察相冲突,并将注意力集中在一些建议上。此外,几种不同的措施已被证明是等效的。当我们从理论、实验和观察中学到更多时,我描述了这些测量将面临的许多重要测试中的一些。

英文摘要:

I describe reasons to think we are living in an eternally inflating multiverse where the observable "constants" of nature vary from place to place. The major obstacle to making predictions in this context is that we must regulate the infinities of eternal inflation. I review a number of proposed regulators, or measures. Recent work has ruled out a number of measures by showing that they conflict with observation, and focused attention on a few proposals. Further, several different measures have been shown to be equivalent. I describe some of the many nontrivial tests these measures will face as we learn more from theory, experiment, and observation.

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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