Slow-roll parameters in braneworld cosmologies

被引：79

作者：

Calcagni, G ^{[1
]}

机构：

[1] Univ Parma, Dipartimento Fis M Melloni, I-43100 Parma, Italy

来源：

PHYSICAL REVIEW D | 2004年 / 69卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.69.103508

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a general slow-roll formalism within braneworld-motivated cosmologies with non-standard effective Friedmann equations. Full towers of parameters involving either the inflaton potential or the Hubble parameter are constructed and the dynamics of nontachyonic and tachyonic fields are considered in detail; exact cosmological solutions and the inflationary attractor condition are provided. We compare scalar-driven and tachyon-driven accelerating eras through slow-roll correspondence and the observational imprint on early-universe structures.

引用

页数：21

共 193 条

[1] CONSTRAINTS ON GENERALIZED INFLATIONARY COSMOLOGIES [J].

ABBOTT, LF ;

WISE, MB .

NUCLEAR PHYSICS B, 1984, 244 (02) :541-548

[2] Cosmological dynamics of the tachyon with an inverse power-law potential [J].

Abramo, LR ;

Finelli, F .

PHYSICS LETTERS B, 2003, 575 (3-4) :165-171

[3] Gauge-invariant second-order perturbations and non-Gaussianity from inflation [J].

Acquaviva, V ;

Bartolo, N ;

Matarrese, S ;

Riotto, A .

NUCLEAR PHYSICS B, 2003, 667 (1-2) :119-148

[4] Symmetries leading to inflation [J].

Aguirregabiria, JM ;

Chimento, LP ;

Jakubi, AS ;

Lazkoz, R .

PHYSICAL REVIEW D, 2003, 67 (08)

[5]

AKAMA K, 1983, LECT NOTES PHYS, V176, P267

[6] Inflation from D-(D)over-bar brane annihilation [J].

Alexander, SHS .

PHYSICAL REVIEW D, 2002, 65 (02)

[7]

[Anonymous], 2001, HOUCHES SUMMER SCH S

[8]

[Anonymous], J HIGH ENERGY PHYS

[9] New dimensions at a millimeter to a fermi and superstrings at a TeV [J].

Antoniadis, I ;

Arkani-Hamed, N ;

Dimopoulos, S ;

Dvali, G .

PHYSICS LETTERS B, 1998, 436 (3-4) :257-263

[10] The hierarchy problem and new dimensions at a millimeter [J].

Arkani-Hamed, N ;

Dimopoulos, S ;

Dvali, G .

PHYSICS LETTERS B, 1998, 429 (3-4) :263-272

← 1 2 3 4 5 6 7 8 9 10 →