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arXiv 1302.3877astro-ph.COhep-th
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用关联函数中的共振信号探测双场开放暴胀

Probing Two-Field Open Inflation by Resonant Signals in Correlation Functions

Thorsten Battefeld, Jens C. Niemeyer, Dimitar Vlaykov

摘要:

我们推导出振荡信号的关联函数在两个领域的开放的通货膨胀的装置中的形式主义,这样的签名是由共振之间的振荡在隧道场和起伏的暴胀在曲率占主导地位,中间和随后的暴胀制度。虽然振幅是依赖于模型的,我们发现不同的振荡的功率和双谱,可以作为一个直接的探针的曲率占主导地位的阶段,从而间接地,加强索赔的字符串景观,如果他们被观察到。我们评论的前景,检测这些泄漏的迹象,在目前的实验,这是具有挑战性的,但不是不可能的。在技术层面上,我们特别注意的截断波动的适用条件轻(暴胀)场和推导的上限的振荡振幅的重场。违反这些界限,需要在扰动水平的多场分析。

英文摘要:

We derive oscillatory signals in correlation functions in two-field open inflation by means of the in-in formalism; such signatures are caused by resonances between oscillations in the tunnelling field and fluctuations in the inflaton during the curvature dominated, intermediate and subsequent inflationary regime. While amplitudes are model-dependent, we find distinct oscillations in the power and bi-spectrum that can act as a direct probe of the curvature dominated phase and thus, indirectly, strengthen the claim of the string landscape if they were observed. We comment on the prospects of detecting these tell-tale signs in current experiments, which is challenging, but not impossible. At the technical level, we pay special attention to the applicability conditions for truncation fluctuations to the light (inflaton) field and derive upper limits on the oscillation amplitude of the heavy field. A violation of these bounds requires a multi-field analysis at the perturbed level.

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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