INFLATION AND SQUEEZED QUANTUM STATES
INFLATION AND SQUEEZED QUANTUM STATES
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DOI：
10.1103/physrevd.50.4807
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发表时间：
1994-10-15
影响因子：
5
通讯作者：
PROKOPEC, T
中科院分区：
文献类型：
--
作者：
ALBRECHT, A;FERREIRA, P;PROKOPEC, T
从压缩量子态的角度分析暴胀宇宙学。正如Grishchuk和Sidorov所指出的，在宇宙暴胀期间发生的量子涨落放大为宏观扰动是一个量子压缩的过程。我们仔细发展的压缩态形式主义，并推导出方程的高斯初始状态的演变。我们导出了简单暴胀模型的密度扰动功率谱，并讨论了它的性质。我们的结论是，压缩态形式主义提供了一个有趣的框架内，研究放大过程，但是，在不同意的索赔Grishchuk和Sidorov，它没有为我们提供任何新的物理结果。
Inflationary cosmology is analyzed from the point of view of squeezed quantum states. As noted by Grishchuk and Sidorov, the amplification of quantum fluctuations into macroscopic perturbations which occurs during cosmic inflation is a process of quantum squeezing. We carefully develop the squeezed state formalism and derive the equations that govern the evolution of a Gaussian initial state. We derive the power spectrum of density perturbations for a simple inflationary model and discuss its features. We conclude that the squeezed state formalism provides an interesting framework within which to study the amplification process, but, in disagreement with the claims of Grishchuk and Sidorov, that it does not provide us with any new physical results.