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

共 48 条

[21] Non-singular cosmology in a model of non-relativistic gravity [J].

Cai, Yi-Fu ;

Saridakis, Emmanuel N. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2009, (10)

[22] Genericness of a big bounce in isotropic loop quantum cosmology [J].

Date, G ;

Hossain, GM .

PHYSICAL REVIEW LETTERS, 2005, 94 (01)

[23] Flux compactification [J].

Douglas, Michael R. ;

Kachru, Shamit .

REVIEWS OF MODERN PHYSICS, 2007, 79 (02) :733-796

[24] The emergent universe: inflationary cosmology with no singularity [J].

Ellis, GFR ;

Maartens, R .

CLASSICAL AND QUANTUM GRAVITY, 2004, 21 (01) :223-232

[25]

Ellis GFR, 2004, CLASSICAL QUANT GRAV, V21, P233, DOI 10.1088/0264-9381/21/l/016

[26] Classical bounce: Constraints and consequences [J].

Falciano, F. T. ;

Lilley, Marc ;

Peter, Patrick .

PHYSICAL REVIEW D, 2008, 77 (08)

[27] Cosmology with negative potentials [J].

Felder, G ;

Frolov, A ;

Kofman, L ;

Linde, A .

PHYSICAL REVIEW D, 2002, 66 (02)

[28]

Firouzjahi H, 2004, J HIGH ENERGY PHYS

[29] Oscillations in the CMB from axion monodromy inflation [J].

Flauger, Raphael ;

McAllister, Liam ;

Pajer, Enrico ;

Westphal, Alexander ;

Xu, Gang .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2010, (06)

[30] Features in the primordial power spectrum? A frequentist analysis [J].

Hamann, Jan ;

Shafieloo, Arman ;

Souradeep, Tarun .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2010, (04)

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