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arXiv 1404.5740astro-ph.COgr-qchep-phquant-ph
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基于BICEP2的坍缩模型对暴胀扰动的经典化

Classicalization of inflationary perturbations by collapse models in the light of BICEP2

Suratna Das, Satyabrata Sahu, Shreya Banerjee, T. P. Singh

摘要:

暴胀和由此而来的原初微扰的量子起源,比BICEP 2观测原初引力波之后的任何时候都有更坚实的基础。这种范式成功的一个关键因素在于解释所观察到的宇宙学不均匀性的经典性,尽管它们是量子起源的。虽然退相干提供了对这个问题的部分理解,但单一结果的问题激发了宇宙学背景下量子坍缩模型的分析,这些模型一般修改了原始扰动的动力学,因此可以在观测值上留下印记。我们重新审视这样一个最近提出的工作模型的经典化自发崩溃\cite{Das:2013qwa}在BICEP 2的观察,寻找可能的修改张量功率谱及其影响。我们表明,它可以潜在地改变单场模型的一致性关系和精确测量的$n_T$和它的运行可以作为一个测试这样的动力学在早期宇宙。

英文摘要:

Inflationary and hence quantum origin of primordial perturbations is on a firmer ground than ever post the BICEP2 observations of primordial gravitational waves. One crucial ingredient of success of this paradigm rests on explaining the observed classicality of cosmological inhomogeinities despite their quantum origin. Although decoherence provides a partial understanding of this issue, the question of single outcome motivates the analysis of quantum collapse models in cosmological context which generically modify the dynamics of primordial perturbations and hence can leave their imprints on observables. We revisit one such recently proposed working model of classicalization by spontaneous collapse \cite{Das:2013qwa} in the light of BICEP2 observations to look for possible modifications to tensor power spectra and their implications. We show that it can potentially change the consistency relation of single-field models and a precise measurement of $n_T$ and its running could serve as a test of such dynamics in the early universe.

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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