A note on low energy effective theory of chromo-natural inflation in the light of BICEP2 results
A note on low energy effective theory of chromo-natural inflation in the light of BICEP2 results
复制标题
根据BICEP2结果对自然色暴胀低能有效理论的注解
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. Panda
中科院分区：
文献类型：
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作者：
Anindita Bhattacharjee;A. Deshamukhya;S. Panda
BICEP 2的最新结果揭示了一个更大的张量标量比（r）值，为暴胀模型的研究开辟了新的途径。实验需要重新确认结果，特别是普朗克和BICEP 2之间的一致性。另一方面，普朗克和BICEP 2的联合分析，包括尘埃偏振不确定性，降低了r的上限。本文从观测数据出发，重新考察了色-自然暴胀模型的低能有效理论及其推广。我们发现，该模型的参数空间承认一个大的值r以及其他宇宙学观测数据一致。
Recent result of BICEP2, revealing a larger value of tensor to scalar ratio (r), has opened up new investigations of the inflationary models to fit the experimental data. The experiment needs to reconfirm the results, specifically the consistency between Planck and BICEP2. On the other hand, the combined analysis of Planck and BICEP2, including the dust polarization uncertainty, brings down the upper limit on r. In this paper, we re-examine the low energy effective theory of chromo-natural inflation model and its generalization in view of such observational data. We find that the parameter space of the model admits a large value of r as well as other cosmological observables consistent with data.