Wiggles in the cosmic microwave background radiation: Echoes from nonsingular cyclic inflation

被引：35

作者：

Biswas, Tirthabir ^{[1
,2
]}

Mazumdar, Anupam ^{[2
,3
]}

Shafieloo, Arman ^{[4
]}

机构：

[1] St Cloud State Univ, Dept Phys, St Cloud, MN 56301 USA

[2] Loyola Univ, Dept Phys, New Orleans, LA 70118 USA

[3] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[4] Univ Oxford, Dept Phys, Oxford OX1 3NP, England

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 12期

关键词：

EMERGENT UNIVERSE;

D O I：

10.1103/PhysRevD.82.123517

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper we consider a unique model of inflation where the universe undergoes rapid asymmetric oscillations, each cycle lasting similar to 10(6) Planck times. Over many, many cycles the space-time expands to mimic the standard inflationary scenario. Moreover, these rapid oscillations leave a distinctive periodic signature in lnk in the primordial power spectrum, where k denotes the comoving scale. Although the cyclic-inflation model contains additional parameters as compared to the standard power-law spectrum, the improvement to the fit of the 7-year WMAP data is significant.

引用

页数：10

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