Non-Gaussianity and cosmic uncertainty in curvaton-type models

被引：55
作者：
Lyth, David H. [1 ]
机构：
[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2006年 / 06期
关键词：
CMBR theory; inflation; physics of the early universe; power spectrum;
D O I：
10.1088/1475-7516/2006/06/015
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In curvaton-type models, observable non-Gaussianity of the curvature perturbation would come from a contribution of the form (delta sigma)(2), where ds is Gaussian. I analyse this situation allowing ds to be scale dependent. The actual curvaton model is considered in more detail than before, including its cosmic uncertainty and anthropic status. The status of curvaton-type models after WMAP ( Wilkinson microwave anisotropy probe) year three data is considered.
引用
收藏
页数：41
相关论文
共 135 条
[1]   NATURAL INFLATION - PARTICLE PHYSICS MODELS, POWER-LAW SPECTRA FOR LARGE-SCALE STRUCTURE, AND CONSTRAINTS FROM THE COSMIC BACKGROUND EXPLORER [J].
ADAMS, FC ;
BOND, JR ;
FREESE, K ;
FRIEMAN, JA ;
OLINTO, AV .
PHYSICAL REVIEW D, 1993, 47 (02) :426-455
[2]  
ALABIDI L, 2005, ASTROPH0510441
[3]  
Arkani-Hamed N, 2003, J COSMOL ASTROPART P
[4]   Extranatural inflation [J].
Arkani-Hamed, N ;
Cheng, HC ;
Creminelli, P ;
Randall, L .
PHYSICAL REVIEW LETTERS, 2003, 90 (22) :4
[5]   GAUGE-INVARIANT COSMOLOGICAL PERTURBATIONS [J].
BARDEEN, JM .
PHYSICAL REVIEW D, 1980, 22 (08) :1882-1905
[6]   SPONTANEOUS CREATION OF ALMOST SCALE-FREE DENSITY PERTURBATIONS IN AN INFLATIONARY UNIVERSE [J].
BARDEEN, JM ;
STEINHARDT, PJ ;
TURNER, MS .
PHYSICAL REVIEW D, 1983, 28 (04) :679-693
[7]  
BARNABY N, 2006, ASTROPH0601481
[8]  
BARROW JD, 2005, GRQC0511127
[9]   Non-Gaussianity from inflation: theory and observations [J].
Bartolo, N ;
Komatsu, E ;
Matarrese, S ;
Riotto, A .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2004, 402 (3-4) :103-266
[10]   Non-Gaussianity in the curvaton scenario [J].
Bartolo, N ;
Matarrese, S ;
Riotto, A .
PHYSICAL REVIEW D, 2004, 69 (04)
12345678910