为什么暴胀子势是凹势而不是凸势？
Why concave rather than convex inflaton potential?
摘要：
宇宙微波背景的Planck数据表明，凹暴胀势的Starobinsky型模型优于凸暴胀势的混沌模型.有什么原因吗？在这里，我们认为，如果我们的宇宙开始于一个欧几里得虫洞，那么Starobinsky型暴胀是概率上的青睐。众所周知，对于比哈特尔和霍金最初假设的更一般的参数选择，哈特尔-霍金波函数由欧几里得虫洞主导，这可以解释为从无到有创造了两个经典宇宙。我们发现，只有一端的虫洞可以经典的凸势，而两端可以经典的凹势。因此，后者的可能性更大。
英文摘要：
The Planck data on cosmic microwave background indicates that the Starobinsky-type model with concave inflation potential is favored over the convex-type chaotic inflation. Is there any reason for that? Here we argue that if our universe began with a Euclidean wormhole, then the Starobinsky-type inflation is probabilistically favored. It is known that for a more generic choice of parameters than that originally assumed by Hartle and Hawking, the Hartle-Hawking wave function is dominated by Euclidean wormholes, which can be interpreted as the creation of two classical universes from nothing. We show that only one end of the wormhole can be classicalized for a convex potential, while both ends can be classicalized for a concave potential. The latter is therefore more probable.
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。
