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arXiv 0802.1067hep-thastro-phgr-qc
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从相变到永恒暴胀

The Phase Transition to Eternal Inflation

Paolo Creminelli, Sergei Dubovsky, Alberto Nicolis, Leonardo Senatore, Matias Zaldarriaga

摘要:

对于慢卷暴胀,我们研究了到永恒状态的相变。从一个有限的暴胀体积出发,我们考虑宇宙在再加热时的体积作为序参量。我们证明了经典暴胀子速度存在一个临界值,\dot <$^2/H^4 = 3/(2 π^2),在这个临界值处,再加热体积的概率分布经历一个急剧的转变。特别是,对于亚临界暴胀速度,所有分布矩都变得无穷大。我们表明,在同一个过渡点的系统开发一个非零的概率有一个严格的无限再热体积,同时保留有限的概率为有限的值。我们的分析代表了系统在慢滚参数和H^2/M_P1 ^2的最低阶的精确量子处理。

英文摘要:

For slow-roll inflation we study the phase transition to the eternal regime. Starting from a finite inflationary volume, we consider the volume of the universe at reheating as order parameter. We show that there exists a critical value for the classical inflaton speed, \dotϕ^2/H^4 = 3/(2 π^2), where the probability distribution for the reheating volume undergoes a sharp transition. In particular, for sub-critical inflaton speeds all distribution moments become infinite. We show that at the same transition point the system develops a non-vanishing probability of having a strictly infinite reheating volume, while retaining a finite probability for finite values. Our analysis represents the exact quantum treatment of the system at lowest order in the slow-roll parameters and H^2/M_Pl^2.

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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