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arXiv 1002.0029hep-phastro-ph.COgr-qc
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混合自然低尺度通货膨胀

Hybrid Natural Low Scale Inflation

Graham G Ross, Gabriel German

摘要:

我们讨论了混合自然暴胀模型的唯象意义,其中暴胀子是一个伪戈德斯通玻色子,但暴胀终止于第二个标量场。该方案的一个特点是戈德斯通对称性破缺的尺度可以低于普朗克尺度,因此引力修正是可控的。我们表明,对于超对称模型,膨胀的规模可以选择之间的任何地方的Lyth上限和一个值接近的电弱破缺规模。与以往的低尺度暴胀模型不同的是,通过自由参数的选择,可以很容易地得到观测到的密度扰动和谱指数。

英文摘要:

We discuss the phenomenological implications of hybrid natural inflation models in which the inflaton is a pseudo-Goldstone boson but inflation is terminated by a second scalar field. A feature of the scheme is that the scale of breaking of the Goldstone symmetry can be lower than the Planck scale and so gravitational corrections are under control. We show that, for supersymmetric models, the scale of inflation can be chosen anywhere between the Lyth upper bound and a value close to the electroweak breaking scale. Unlike previous models of low scale inflation the observed density perturbations and spectral index are readily obtained by the choice of the free parameters.

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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