Bridging geometries and potentials in DBI cosmologies

被引：15

作者：

Chimento, Luis P. ^{[2
]}

Lazkoz, Ruth ^{[1
]}

机构：

[1] Euskal Herriko Unibertsitatea, Fis Teorikoa Zientzia & Teknol Fak, Bilbao 48080, Spain

[2] Univ Buenos Aires, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

来源：

GENERAL RELATIVITY AND GRAVITATION | 2008年 / 40卷 / 12期

关键词：

Inflation; Scalar fields; DBI model;

D O I：

10.1007/s10714-008-0637-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the link between the warp function and the potential in Dirac-Born-Infeld (DBI) power-law cosmologies. We give a prescription to take advantage of the fact that there is always a choice of potential resulting in a constant ratio between pressure and energy density for a given a warp factor. We illustrate the method with several examples, and complete the investigation by showing how symmetries can be used to generate new DBI solutions from existing ones.

引用

页码：2543 / 2555

页数：13

共 43 条

[1] Symmetries leading to inflation [J].

Aguirregabiria, JM ;

Chimento, LP ;

Jakubi, AS ;

Lazkoz, R .

PHYSICAL REVIEW D, 2003, 67 (08)

[2] Phantom k-essence cosmologies -: art. no. 023509 [J].

Aguirregabiria, JM ;

Chimento, LP ;

Lazkoz, R .

PHYSICAL REVIEW D, 2004, 70 (02) :5

[3] DBI in the sky: Non-Gaussianity from inflation with a speed limit [J].

Alishahiha, M ;

Silverstein, E ;

Tong, D .

PHYSICAL REVIEW D, 2004, 70 (12) :15

[4]

Ashoorioon A., ARXIVHEPTH0607001

[5]

BABICHEV E, 2006, JHEP, V609

[6] Cosmology with tachyon field as dark energy [J].

Bagla, JS ;

Jassal, HK ;

Padmanabhan, T .

PHYSICAL REVIEW D, 2003, 67 (06)

[7] Warped reheating in brane-antibrane inflation [J].

Barnaby, N ;

Burgess, CP ;

Cline, JM .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2005, (04) :167-184

[8] A microscopic limit on gravitational waves from D-brane inflation [J].

Baumann, Daniel ;

McAllister, Liam .

PHYSICAL REVIEW D, 2007, 75 (12)

[9]

BEAN R, ARXIV07101812HEPTH

[10] M-theory inflation from multi M5-brane dynamics [J].

Becker, K ;

Becker, M ;

Krause, A .

NUCLEAR PHYSICS B, 2005, 715 (1-2) :349-371

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