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arXiv 1303.2616astro-ph.COhep-phhep-th
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约束型单值通货膨胀

Constraining Monodromy Inflation

Hiranya Peiris, Richard Easther, Raphael Flauger

摘要:

我们使用宇宙微波背景(CMB)的数据从9年的WMAP发布单值暴胀,其特点是一个线性暴胀潜力与周期性调制的约束。我们确定了两种可能的周期性调制,显着提高了拟合,但目前还不清楚这种改善是否与“信号”或散射在测得的角功率谱。标准模型的选择标准对未调制的电位稍有偏爱。一个调制的暴胀势可以产生一个特定的和典型的形式的实质性的原始非高斯性。对于WMAP角功率谱的最佳拟合参数,相应的非高斯性可能在即将到来的CMB数据中检测到,允许对调制暴胀势的预测进行非平凡的一致性检查。

英文摘要:

We use cosmic microwave background (CMB) data from the 9-year WMAP release to derive constraints on monodromy inflation, which is characterized by a linear inflaton potential with a periodic modulation. We identify two possible periodic modulations that significantly improve the fit, but it is unclear whether this improvement is associated with a "signal" or with the scatter in the measured angular power spectrum. The unmodulated potential is mildly favored by standard model selection criteria. A modulated inflationary potential can generate substantial primordial non-Gaussianity, of a specific and characteristic form. For the best-fit parameters to the WMAP angular power spectrum, the corresponding non-Gaussianity might be detectable in upcoming CMB data, allowing nontrivial consistency checks on the predictions of a modulated inflationary potential.

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