arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2012.02133hep-thastro-ph.COgr-qchep-ph
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$S$ -矩阵和de Sitter的Anomaly

$S$-Matrix and Anomaly of de Sitter

Gia Dvali

摘要:

$S$ -重力矩阵公式不包括de Sitter真空。特别是,这对弦论来说是有机的。$S$ -矩阵约束是由一个反常的量子破裂时间正比于引力和/或弦耦合的倒数值。由于这一点,德西特可以满足有效真空的条件,只有在牺牲平凡化的引力子和闭弦$S$矩阵。在非零引力和弦耦合下,de Sitter被粒子$1/N$效应所变形,类似于QCD中的Witten-Veneziano机制,具有$N$色.在这幅图中,爱因斯坦引力的$S$ -矩阵公式,如弦论,消除了一个突出的宇宙学难题。我们讨论了可能的观测签名,这是特别有趣的理论与大量的粒子物种。即使标准暴胀子涨落可以忽略不计,物种也可以将原始量子印记增强到潜在的可观测水平。

英文摘要:

$S$-matrix formulation of gravity excludes de Sitter vacua. In particular, this is organic to string theory. The $S$-matrix constraint is enforced by an anomalous quantum break-time proportional to the inverse values of gravitational and/or string couplings. Due to this, de Sitter can satisfy the conditions for a valid vacuum only at the expense of trivializing the graviton and closed-string $S$-matrixes. At non-zero gravitational and string couplings, de Sitter is deformed by corpuscular $1/N$ effects, similarly to Witten-Veneziano mechanism in QCD with $N$ colors. In this picture, an $S$-matrix formulation of Einstein gravity, such as string theory, nullifies an outstanding cosmological puzzle. We discuss possible observational signatures which are especially interesting in theories with large number of particle species. Species can enhance the primordial quantum imprints to potentially observable level even if the standard inflaton fluctuations are negligible.

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