Power spectra in spacetime noncommutative inflation

被引：61

作者：

Huang, QG ^{[1
]}

Li, M ^{[1
]}

机构：

[1] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China

来源：

NUCLEAR PHYSICS B | 2005年 / 713卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.nuclphysb.2005.02.002

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The spacetime uncertainty relation, which deviates from general relativity, emerges in string/M-theory. It is possible to observe this deviation through cosmological experiments, in particular through the measurements of CMB power spectrum. This paper extends some previous observations to more general inflation schemes. We find that the noncommutative spacetime effects always suppress the power spectrum of both the scalar and tensor perturbations, and may provide a large enough running of the spectral index to fit the results of WMAP in the inflation model. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：219 / 234

页数：16

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