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arXiv 0809.5280gr-qc
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暴胀过程中标量规范不变度规微扰不同方法一致性的确认

A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation

Mariano Anabitarte, Mauricio Bellini

摘要:

我们重新审视了著名的规范不变的标量度量波动的形式主义的扩展,研究的频谱,暴胀子和规范不变(标量)度量波动的框架内的单场暴胀模型的准指数膨胀是由一个通货膨胀,这是最低限度地耦合到重力。这里的建议也适用于大振幅的波动,但对于宇宙尺度,矢量和张量扰动可以忽略,流体是irrotacional。

英文摘要:

We revisit an extension of the well-known formalism for gauge-invariant scalar metric fluctuations, to study the spectrums for both, the inflaton and gauge invariant (scalar) metric fluctuations in the framework of a single field inflationary model where the quasi-exponential expansion is driven by an inflation which is minimally coupled to gravity. The proposal here examined is valid also for fluctuations with large amplitude, but for cosmological scales, where vector and tensor perturbations can be neglected and the fluid is irrotacional.

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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