Cosmological attractors and asymptotic freedom of the inflaton field
Cosmological attractors and asymptotic freedom of the inflaton field
复制标题
宇宙吸引子和暴胀场的渐近自由
DOI：
10.1088/1475-7516/2016/06/047
复制
发表时间：
2016
影响因子：
6.4
通讯作者：
Andrei Linde
中科院分区：
文献类型：
--
作者：
R. Kallosh;Andrei Linde
我们证明了在宇宙学α-吸引子模型中，暴胀子与所有其他场的耦合在暴胀过程中被指数抑制。在超引力的背景下，这一特征是模空间的基本双曲几何的结果，该模空间具有对应于暴胀子场的平坦方向。这些因素的组合保护了暴胀子势的渐近平坦性。
We show that the inflaton coupling to all other fields is exponentially suppressed during inflation in the cosmological α-attractor models. In the context of supergravity, this feature is a consequence of the underlying hyperbolic geometry of the moduli space which has a flat direction corresponding to the inflaton field. A combination of these factors protects the asymptotic flatness of the inflaton potential.