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arXiv 1406.5490hep-th
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Bunch-Davies De Sitter波函数的晚期结构

Late-time Structure of the Bunch-Davies De Sitter Wavefunction

Dionysios Anninos, Tarek Anous, Daniel Z. Freedman, George Konstantinidis

摘要:

我们研究了在德西特背景下相互作用光场的Bunch-Davies波函数的后期行为。我们使用微扰技术开发的框架中的AdS/CFT,并分析继续计算树和循环水平的贡献束戴维斯波函数。我们考虑一般质量的自相互作用标量,但特别关注无质量和共形耦合的情况。我们发现,某些贡献增长在保形时间在树和循环水平。我们也考虑了规范场和引力子。利用经典渐近de Sitter解的四维Febriman-Graham展开,证明了在树水平上纯引力子扇区中波函数不含对数增长.最后,假设波函数与共形场论的配分函数之间存在全息关系,我们用共形场论的语言解释了对数增长。

英文摘要:

We examine the late time behavior of the Bunch-Davies wavefunction for interacting light fields in a de Sitter background. We use perturbative techniques developed in the framework of AdS/CFT, and analytically continue to compute tree and loop level contributions to the Bunch-Davies wavefunction. We consider self-interacting scalars of general mass, but focus especially on the massless and conformally coupled cases. We show that certain contributions grow logarithmically in conformal time both at tree and loop level. We also consider gauge fields and gravitons. The four-dimensional Fefferman-Graham expansion of classical asymptotically de Sitter solutions is used to show that the wavefunction contains no logarithmic growth in the pure graviton sector at tree level. Finally, assuming a holographic relation between the wavefunction and the partition function of a conformal field theory, we interpret the logarithmic growths in the language of conformal field theory.

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