BLUE PERTURBATION SPECTRA FROM INFLATION

被引:36
作者
MOLLERACH, S
MATARRESE, S
LUCCHIN, F
机构
[1] UNIV PADUA,DIPARTIMENTO FIS G GALILEI,I-35131 PADUA,ITALY
[2] UNIV PADUA,DIPARTIMENTO ASTRON,I-35122 PADUA,ITALY
来源
PHYSICAL REVIEW D | 1994年 / 50卷 / 08期
关键词
D O I
10.1103/PhysRevD.50.4835
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
It is generally believed that inflationary models for the origin of primordial density perturbations predict a spectral index n less than or equal to 1. However, some observations, such as the first two years of COBE data, the Tenerife temperature anisotropy detection, bulk motions, and structures on the similar to 50h(-1) Mpc scale, have recently aroused much interest in spectral indices n > 1 (''blue spectra''). We show that there is a class of inflationary models leading to this kind of spectra: they are produced while the inflaton field rolls down to a potential minimum with the potential energy dominated by a cosmological-constant-like piece.
引用
收藏
页码:4835 / 4841
页数:7
相关论文
共 42 条
[21]   NONSTANDARD PRIMORDIAL FLUCTUATIONS FROM A POLYNOMIAL INFLATION POTENTIAL [J].
HODGES, HM ;
BLUMENTHAL, GR ;
KOFMAN, LA ;
PRIMACK, JR .
NUCLEAR PHYSICS B, 1990, 335 (01) :197-220
[22]  
HU W, 1994, CFPATH9412 REP
[23]   STRUCTURE FORMATION WITH COLD PLUS HOT DARK-MATTER [J].
KLYPIN, A ;
HOLTZMAN, J ;
PRIMACK, J ;
REGOS, E .
ASTROPHYSICAL JOURNAL, 1993, 416 (01) :1-16
[24]   COSMOLOGICAL CONSTANT, COBE COSMIC MICROWAVE BACKGROUND ANISOTROPY, AND LARGE-SCALE CLUSTERING [J].
KOFMAN, LA ;
GNEDIN, NY ;
BAHCALL, NA .
ASTROPHYSICAL JOURNAL, 1993, 413 (01) :1-9
[25]   THE MOTION OF THE LOCAL GROUP WITH RESPECT TO THE 15,000-KILOMETER-PER-SECOND ABELL CLUSTER INERTIAL FRAME [J].
LAUER, TR ;
POSTMAN, M .
ASTROPHYSICAL JOURNAL, 1994, 425 (02) :418-438
[26]   COBE, GRAVITATIONAL-WAVES, INFLATION AND EXTENDED INFLATION [J].
LIDDLE, AR ;
LYTH, DH .
PHYSICS LETTERS B, 1992, 291 (04) :391-398
[27]  
LIDDLE AR, 1993, UNPUB REPORT
[28]  
LIDSEY JE, 1992, MON NOT R ASTRON SOC, V258, P57
[29]   AXIONS IN INFLATIONARY COSMOLOGY [J].
LINDE, A .
PHYSICS LETTERS B, 1991, 259 (1-2) :38-47
[30]   HYBRID INFLATION [J].
LINDE, A .
PHYSICAL REVIEW D, 1994, 49 (02) :748-754