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arXiv 1002.2916astro-ph.CO
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标量宇宙学扰动的退相干

Decoherence of scalar cosmological perturbations

Mariano Franco, Esteban Calzetta

摘要:

在本文中,我们分析了在宇宙背景辐射(CBR)的温度各向异性的观测中检测非平凡量子现象的可能性,例如,如果宇宙可以在对应于不同CBR温度自相关的两个状态的相干叠加中找到。这样的观测对标量原始涨落敏感,但对张量涨落不敏感,因此张量涨落被转换为前者的环境。即使是一个自由暴胀子场最低限度地耦合到重力,标量-张量相互作用诱导足够的标量波动的历史之间的退相干,使他们经典的任何现实的探针下,其振幅。

英文摘要:

In this paper we analyze the possibility of detecting nontrivial quantum phenomena in observations of the temperature anisotropy of the cosmic background radiation (CBR), for example, if the Universe could be found in a coherent superposition of two states corresponding to different CBR temperature self-correlations. Such observations are sensitive to scalar primordial fluctuations but insensitive to tensor fluctuations, which are therefore converted into an environment for the former. Even for a free inflaton field minimally coupled to gravity, scalar-tensor interactions induce enough decoherence among histories of the scalar fluctuations as to render them classical under any realistic probe of their amplitudes.

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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