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arXiv 1504.00482hep-th
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希格斯暴胀和一般初始条件

Higgs Inflation and General Initial Conditions

Sarang Zeynizadeh, Amin Rezaei Akbarieh

摘要:

粒子物理学中的希格斯场如果与引力非最小耦合,可以起到早期宇宙中暴胀子的作用。希格斯暴胀理论预言了一个小的张量与标量之比:$r\simeq 0.003$。虽然该值与BICEP 2/Keck Array和Planck数据给出的$r < 0.12$上限一致,但并不在它们的极大似然点:$r\simeq 0.05$。暴胀观测量不仅依赖于暴胀模型,还依赖于暴胀的初始条件。改变充气初始状态可提高$r$值。在这项工作中,我们研究了一般初始条件下的Higgs暴胀模型,并证明了这些一般初始条件的一个子集,导致增强的$r$。然后证明了参数空间的这个区域与非高斯界是一致的。

英文摘要:

Higgs field of particle physics can play the role of the inflaton in the early universe, if it is non-minimally coupled to gravity. The Higgs inflation scenario predicts a small tensor to scalar ratio: $r\simeq 0.003$. Although this value is consistent with the upper bound $r < 0.12$ given by BICEP2/Keck Array and Planck data, but it is not at their maximum likelihood point: $r\simeq 0.05$. Inflationary observables depend not only on the inflationary models, but also depend on the initial conditions of inflation. Changing initial state of inflation can improve the value of $r$. In this work, we study the Higgs inflation model under general initial conditions and show that there is a subset of these general initial conditions which leads to enhancement of $r$. Then we show that this region of parameter space is consistent with non-Gaussianity bound.

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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