Inflation from nilpotent Kähler corrections
Inflation from nilpotent Kähler corrections
复制标题
幂零凯勒修正带来的通货膨胀
DOI：
10.1088/1475-7516/2016/11/028
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发表时间：
2016
影响因子：
6.4
通讯作者：
M. Scalisi
中科院分区：
文献类型：
--
作者：
Evan McDonough;M. Scalisi
我们开发了一类新的超引力宇宙学模型，其中膨胀是由凯勒势中的项引起的，该势项将幂零超场 S 与手征扇区 Φ 混合在一起。由于新项是非（反）全纯的，因此无法通过凯勒变换删除，因此这些模型本质上是凯勒势驱动的。例如，由于抗 D3 膜对弦理论体几何的反反应，此类术语可能会出现。我们表明，这种机制非常通用，可以对暴胀和暗能量进行统一描述，并在真空中实现可控 SUSY 破裂。当体场的内部几何形状是双曲线时，我们证明小扰动凯勒校正自然会导致 α 吸引子行为，膨胀预测与最新的普朗克数据非常一致。
We develop a new class of supergravity cosmological models where inflation is induced by terms in the Kähler potential which mix a nilpotent superfield S with a chiral sector Φ. As the new terms are non-(anti)holomorphic, and hence cannot be removed by a Kähler transformation, these models are intrinsically Kähler potential driven. Such terms could arise for example due to a backreaction of an anti-D3 brane on the string theory bulk geometry. We show that this mechanism is very general and allows for a unified description of inflation and dark energy, with controllable SUSY breaking at the vacuum. When the internal geometry of the bulk field is hyperbolic, we prove that small perturbative Kähler corrections naturally lead to α-attractor behaviour, with inflationary predictions in excellent agreement with the latest Planck data.