Inflationary Cosmological Perturbations of Quantum-Mechanical Origin
Inflationary Cosmological Perturbations of Quantum-Mechanical Origin
复制标题
DOI：
10.1007/11377306_7
复制
发表时间：
2004-06
期刊：
影响因子：
--
通讯作者：
Jérôme Martin
中科院分区：
文献类型：
--
作者：
Jérôme Martin
摘要本文旨在介绍通货膨胀理论。我们首先描述了慢滚阶段的背景时空行为，并分析了膨胀是如何结束的，宇宙是如何重新加热的。然后，我们介绍了宇宙学微扰理论，并特别强调了宇宙微扰在膨胀过程中的行为。特别是，我们讨论了涨落的量子力学性质，并展示了测不准原理如何固定微扰的幅度。在下一步中，我们计算了慢滚近似下的膨胀功率谱，并将这些理论预测与最近高精度的宇宙微波背景辐射各向异性测量结果进行了比较。我们展示了这些数据如何已经约束了潜在的国际高能物理。最后，我们对跨普朗克问题进行了一些推测，认为这个问题可以让我们打开一扇了解物理现象的窗口，这些现象到目前为止还没有被探索过。
AbstractThis review article aims at presenting the theory of inflation. We first describe the background spacetime behavior during the slow-roll phase and analyze how inflation ends and the Universe reheats. Then, we present the theory of cosmological perturbations with special emphasis on their behavior during inflation. In particular, we discuss the quantum-mechanical nature of the fluctuations and show how the uncertainty principle fixes the amplitude of the perturbations. In a next step, we calculate the inflationary power spectra in the slow-roll approximation and compare these theoretical predictions to the recent high accuracy measurements of the Cosmic Microwave Background radiation (CMBR) anisotropy. We show how these data already constrain the underlying in.ationary high energy physics. Finally, we conclude with some speculations about the trans-Planckian problem, arguing that this issue could allow us to open a window on physical phenomena which have never been probed so far.