宇宙气泡碰撞可观测性的现状报告
A status report on the observability of cosmic bubble collisions
摘要：
在由具有多个最小值的标量势驱动的永恒暴胀的图景中，我们的可观测宇宙存在于从假真空过渡形成的许多气泡中的一个。这些气泡必然会发生碰撞，破坏我们气泡内部的均匀性和各向同性，并可能在我们气泡的可观测部分产生可检测的特征，可能在宇宙微波背景或其他精密宇宙学探测器中。这构成了对永恒暴胀和弦论真空景观的直接实验检验。评估这种可能性大致分为回答三个问题：在一般的泡沫碰撞中会发生什么？预期会产生什么样的观测效果？我们观察到碰撞的可能性有多大？在这篇综述中，我们报告了这些问题的当前进展，改进了一些现有的结果，并试图为未来的工作制定方向。
英文摘要：
In the picture of eternal inflation as driven by a scalar potential with multiple minima, our observable universe resides inside one of many bubbles formed from transitions out of a false vacuum. These bubbles necessarily collide, upsetting the homogeneity and isotropy of our bubble interior, and possibly leading to detectable signatures in the observable portion of our bubble, potentially in the Cosmic Microwave Background or other precision cosmological probes. This constitutes a direct experimental test of eternal inflation and the landscape of string theory vacua. Assessing this possibility roughly splits into answering three questions: What happens in a generic bubble collision? What observational effects might be expected? How likely are we to observe a collision? In this review we report the current progress on each of these questions, improve upon a few of the existing results, and attempt to lay out directions for future work.
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。
