Warm natural inflation
Warm natural inflation
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温暖的自然通货膨胀
DOI：
10.1016/j.physletb.2012.02.005
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发表时间：
2011
影响因子：
4.4
通讯作者：
A. Nautiyal
中科院分区：
文献类型：
--
作者：
H. Mishra;S. Mohanty;A. Nautiyal
在热膨胀模型中，要求产生大的辐射耦合，同时不破坏辐射修正引起的膨胀势的平坦性。在不微调无关耦合的情况下实现这一点的一种方法是超对称性。在这封信中，我们证明了如果膨胀子场和其他光场是伪Nambu-Goldstone玻色子，那么只要温度低于对称破缺标度，势场的辐射修正就会被抑制，而热修正就会很小。在这样的模型中，可能满足相反的要求，即在辐射修正下稳定的膨胀子势，以及产生膨胀子场与其他光场的大的耗散耦合。我们构造了一个热膨胀模型，它给出了观测到的CMB各向异性振幅和谱指数，其中对称性破缺在Gut尺度上。
In warm inflation models there is the requirement of generating large dissipative couplings of the inflaton with radiation, while at the same time, not de-stabilising the flatness of the inflaton potential due to radiative corrections. One way to achieve this without fine tuning unrelated couplings is by supersymmetry. In this Letter we show that if the inflaton and other light fields are pseudo-Nambu–Goldstone bosons then the radiative corrections to the potential are suppressed and the thermal corrections are small as long as the temperature is below the symmetry breaking scale. In such models it is possible to fulfil the contrary requirements of an inflaton potential which is stable under radiative corrections and the generation of a large dissipative coupling of the inflaton field with other light fields. We construct a warm inflation model which gives the observed CMB-anisotropy amplitude and spectral index where the symmetry breaking is at the GUT scale.
影响因子：
8.7
作者：
Komatsu, E.;Smith, K. M.;Wright, E. L.
通讯作者：
Wright, E. L.