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arXiv 1502.04703gr-qcastro-ph.COhep-th
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量子耗尽的一致性宇宙微波背景谱

Consistent Cosmic Microwave Background Spectra from Quantum Depletion

Roberto Casadio, Florian Kuhnel, Alessio Orlandi

摘要:

根据Dvali和Gomez提出的一个新的量子宇宙学模型,我们定量地研究了哈勃参数的可能修改和对宇宙微波背景谱的修正。在这个模型中,标量和张量扰动分别由背景暴胀子和引力子凝聚的量子耗尽产生。我们展示了暴胀子质量如何影响功率谱和张量标量比。接近普朗克尺度的质量将导致强烈的偏差,而标准光谱是恢复的暴胀子质量比普朗克质量小得多。

英文摘要:

Following a new quantum cosmological model proposed by Dvali and Gomez, we quantitatively investigate possible modifications to the Hubble parameter and following corrections to the cosmic microwave background spectrum. In this model, scalar and tensor perturbations are generated by the quantum depletion of the background inflaton and graviton condensate respectively. We show how the inflaton mass affects the power spectra and the tensor-to-scalar ratio. Masses approaching the Planck scale would lead to strong deviations, while standard spectra are recovered for an inflaton mass much smaller than the Planck mass.

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