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arXiv 1708.01587astro-ph.COgr-qchep-th
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暴胀粒子含量的可能特征:自旋2场

Possible Signatures of Inflationary Particle Content: Spin-2 Fields

Matteo Biagetti, Emanuela Dimastrogiovanni, Matteo Fasiello

摘要:

我们研究了大质量自旋2场在暴胀观测量上的印记,特别是在一致性关系的破坏上。在这种设置中,最小的暴胀场内容通过dRGT相互作用与大质量自旋2场相互作用,从而保证不存在Boulware-Deser幽灵般的自由度。自旋粒子的么正性要求,称为Higuchi约束,对可观测信号的大小起着至关重要的作用。

英文摘要:

We study the imprints of a massive spin-2 field on inflationary observables, and in particular on the breaking of consistency relations. In this setup, the minimal inflationary field content interacts with the massive spin-2 field through dRGT interactions, thus guaranteeing the absence of Boulware-Deser ghostly degrees of freedom. The unitarity requirement on spinning particles, known as Higuchi bound, plays a crucial role for the size of the observable signal.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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