Inflationary perturbations from a potential with a step

被引:296
作者
Adams, J
Cresswell, B
Easther, R
机构
[1] Univ Canterbury, Christchurch 1, New Zealand
[2] Columbia Univ, Inst Strings Cosmol & Astroparticle Phys, New York, NY 10027 USA
关键词
D O I
10.1103/PhysRevD.64.123514
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We use a numerical code to compute the density perturbations generated during an inflationary epoch which includes a spontaneous symmetry breaking phase transition. A sharp step in the inflation potential generates k dependent oscillations in the spectrum of primordial density perturbations. The amplitude and extent in wave number of these oscillations depends on both the magnitude and gradient of the step in the inflation potential. We show that observations of the cosmic microwave back,ground anisotropy place strong constraints on the step parameters.
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页数:6
相关论文
共 24 条
[1]   Multiple inflation [J].
Adams, JA ;
Ross, GG ;
Sarkar, S .
NUCLEAR PHYSICS B, 1997, 503 (1-2) :405-425
[2]   On the APM power spectrum and the CMB anisotropy:: evidence for a phase transition during inflation? [J].
Barriga, J ;
Gaztañaga, E ;
Santos, MG ;
Sarkar, S .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 324 (04) :977-987
[3]   THE 3-DIMENSIONAL POWER SPECTRUM MEASURED FROM THE APM GALAXY SURVEY .1. USE OF THE ANGULAR-CORRELATION FUNCTION [J].
BAUGH, CM ;
EFSTATHIOU, G .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1993, 265 (01) :145-156
[4]   A flat Universe from high-resolution maps of the cosmic microwave background radiation [J].
de Bernardis, P ;
Ade, PAR ;
Bock, JJ ;
Bond, JR ;
Borrill, J ;
Boscaleri, A ;
Coble, K ;
Crill, BP ;
De Gasperis, G ;
Farese, PC ;
Ferreira, PG ;
Ganga, K ;
Giacometti, M ;
Hivon, E ;
Hristov, VV ;
Iacoangeli, A ;
Jaffe, AH ;
Lange, AE ;
Martinis, L ;
Masi, S ;
Mason, PV ;
Mauskopf, PD ;
Melchiorri, A ;
Miglio, L ;
Montroy, T ;
Netterfield, CB ;
Pascale, E ;
Piacentini, F ;
Pogosyan, D ;
Prunet, S ;
Rao, S ;
Romeo, G ;
Ruhl, JE ;
Scaramuzzi, F ;
Sforna, D ;
Vittorio, N .
NATURE, 2000, 404 (6781) :955-959
[5]  
HAMILTON AJS, ASTROPH0008392
[6]   MAXIMA-1:: A measurement of the cosmic microwave background anisotropy on angular scales of 10′-5° [J].
Hanany, S ;
Ade, P ;
Balbi, A ;
Bock, J ;
Borrill, J ;
Boscaleri, A ;
De Bernardis, P ;
Ferreira, PG ;
Hristov, VV ;
Jaffe, AH ;
Lange, AE ;
Lee, AT ;
Mauskopf, PD ;
Netterfield, CB ;
Oh, S ;
Pascale, E ;
Rabii, B ;
Richards, PL ;
Smoot, GF ;
Stompor, R ;
Winant, CD ;
Wu, JHP .
ASTROPHYSICAL JOURNAL, 2000, 545 (01) :L5-L9
[7]   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
[8]   ARBITRARINESS OF INFLATIONARY FLUCTUATION SPECTRA [J].
HODGES, HM ;
BLUMENTHAL, GR .
PHYSICAL REVIEW D, 1990, 42 (10) :3329-3333
[9]   GENERATION OF DENSITY PERTURBATIONS IN INFLATIONARY COSMOLOGY [J].
KOFMAN, LA ;
LINDE, AD .
NUCLEAR PHYSICS B, 1987, 282 (3-4) :555-588
[10]  
Leach SM, 2001, PHYS REV D, V64, DOI 10.1103/PhysRevD.64.023512