在碰撞中幸存：评估宇宙气泡碰撞的后果
Surviving the crash: assessing the aftermath of cosmic bubble collisions
摘要：
这篇论文是一系列研究中的第三篇，如果我们居住在一个膨胀的“泡沫宇宙”中，我们可能会观察到与其他泡沫碰撞的影响。在这里，我们研究了气泡碰撞时空的内部结构，重点是观察者可以居住的问题。数值模拟表明，如果气泡间畴壁加速离开，无限类空表面的均匀性发展到未来的碰撞;这强烈表明，观察者可以有碰撞到他们的过去，以前的结果则意味着这是非常可能的。然而，对于几乎所有位置的观测者来说，同质性的恢复将任何可观测到的影响都降级到天空中一个消失的小区域。我们发现，气泡碰撞也可能发挥重要作用，在定义措施的通货膨胀：一个潜在的无限的相对体积因子之间产生两个气泡类型取决于他们之间的畴壁的加速度的标志，这可能反过来与可观测的，如规模或类型的通货膨胀。
英文摘要：
This paper is the third in a series investigating the possibility that if we reside in an inflationary "bubble universe", we might observe the effects of collisions with other such bubbles. Here, we study the interior structure of a bubble collision spacetime, focusing on the issue of where observers can reside. Numerical simulations indicate that if the inter-bubble domain wall accelerates away, infinite spacelike surfaces of homogeneity develop to the future of the collision; this strongly suggests that observers can have collisions to their past, and previous results then imply that this is very likely. However, for observers at nearly all locations, the restoration of homogeneity relegates any observable effects to a vanishingly small region on the sky. We find that bubble collisions may also play an important role in defining measures in inflation: a potentially infinite relative volume factor arises between two bubble types depending on the sign of the acceleration of the domain wall between them; this may in turn correlate with observables such as the scale or type of inflation.
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。
