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arXiv 1702.08855hep-phastro-ph.COhep-th
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热瀑布标量场耦合到光观察器标量场的热膨胀

Thermal Inflation with a Thermal Waterfall Scalar Field Coupled to a Light Spectator Scalar Field

Konstantinos Dimopoulos, David H. Lyth, Arron Rumsey

摘要:

提出了一种新的热膨胀模型,其中热瀑布场的质量依赖于光旁观者标量场。使用$δN$形式主义,“通货膨胀结束”的情况下,以确定该模型是否能够产生的原始曲率扰动的主要贡献进行了调查。考虑了多种约束条件,以探索参数空间,特别强调关键的观测特征。对于自然值的参数,该模型被发现产生一个尖锐的预测标量光谱指数及其运行,以及在当前的观测范围内。

英文摘要:

A new model of thermal inflation is introduced, in which the mass of the thermal waterfall field is dependent on a light spectator scalar field. Using the $δN$ formalism, the "end of inflation" scenario is investigated in order to ascertain whether this model is able to produce the dominant contribution to the primordial curvature perturbation. A multitude of constrains are considered so as to explore the parameter space, with particular emphasis to key observational signatures. For natural values of the parameters, the model is found to yield a sharp prediction for the scalar spectral index and its running, well within the current observational bounds.

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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