On the inflationary perturbations of massive higher-spin fields
On the inflationary perturbations of massive higher-spin fields
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DOI：
10.1088/1475-7516/2017/07/046
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发表时间：
2017-05
影响因子：
6.4
通讯作者：
A. Kehagias;A. Riotto
中科院分区：
文献类型：
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作者：
A. Kehagias;A. Riotto
大质量高自旋场的宇宙学扰动是在暴胀过程中产生的，但由于Higuchi束缚，它们在大于哈勃半径的尺度上衰减。通过引入适当的耦合到暴胀子场，我们表明，可以获得大量的高自旋场，保持不变或衰减非常缓慢的哈勃半径以外的统计标量。这为暴胀带来新的观测信号提供了可能性。
Cosmological perturbations of massive higher-spin fields are generated during inflation, but they decay on scales larger than the Hubble radius as a consequence of the Higuchi bound. By introducing suitable couplings to the inflaton field, we show that one can obtain statistical correlators of massive higher-spin fields which remain constant or decay very slowly outside the Hubble radius. This opens up the possibility of new observational signatures from inflation.