Inflaton two-point correlation in the presence of a cosmic string

被引：11
|
作者：
Tseng, Chien-Yao [1 ]
Wise, Mark B. [1 ]
机构：
[1] CALTECH, Pasadena, CA 91125 USA
来源：
PHYSICAL REVIEW D | 2009年 / 80卷 / 10期
关键词：
BACKGROUND POWER SPECTRUM; INFLATIONARY UNIVERSE SCENARIO; TEMPERATURE ANISOTROPY; MOSAIC OBSERVATIONS; INITIAL CONDITIONS; MICROWAVE; FLUCTUATIONS; COSMOLOGY; FLATNESS; HORIZON;
D O I：
10.1103/PhysRevD.80.103512
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Precise measurements of the microwave background anisotropy have confirmed the inflationary picture of approximately scale invariant, Gaussian primordial adiabatic density perturbations. However, there are some anomalies that suggest a small violation of rotational and/or translational invariance in the mechanism that generates the primordial density fluctuations. Motivated by this we study the two-point correlation of a massless scalar (the inflaton) when the stress tensor contains the energy density from an infinitely long straight cosmic string in addition to a cosmological constant.
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页数：6
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