Impact of Lorentz violation on the dynamics of inflation

被引：11

作者：

Avelino, P. P. ^{[1
,2
]}

Bazeia, D. ^{[3
]}

Losano, L. ^{[3
]}

Menezes, R. ^{[1
,2
,3
]}

Rodrigues, J. J. ^{[3
]}

机构：

[1] Univ Porto, Fac Ciencias, Ctr Fis Porto, P-4169007 Oporto, Portugal

[2] Univ Porto, Fac Ciencias, Dept Fis, P-4169007 Oporto, Portugal

[3] Univ Fed Paraiba, Dept Fis, BR-58051900 Joao Pessoa, Paraiba, Brazil

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 12期

关键词：

1ST-ORDER FORMALISM;

D O I：

10.1103/PhysRevD.79.123503

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This work deals with the dynamics of inflation in the context of a scalar-vector-tensor theory of gravity exhibiting spontaneous Lorentz violation at early times. We describe a first-order formalism which we use to obtain new exact Lorentz violating inflationary solutions for a broad family of models, some in the absence of a potential for the inflaton field. Our results show that different conditions are required to solve the horizon and flatness problems. In particular, we find a necessary condition for inflation to provide a solution to both problems and we show that in inflationary models with no inflaton potential a period of superinflation might be necessary to solve the flatness problem.

引用

页数：6

共 25 条

[1] Lorentz violation in brane cosmology, accelerated expansion and fundamental constants [J].

Ahmadi, F. ;

Jalalzadeh, S. ;

Sepangi, H. R. .

CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (12) :4069-4082

[2]

[Anonymous], ARXIVGRQC0112012

[3] Attractor solutions in Lorentz violating scalar-vector-tensor theory [J].

Arianto ;

Zen, Freddy P. ;

Triyanta ;

Gunara, Bobby E. .

PHYSICAL REVIEW D, 2008, 77 (12)

[4] Some impacts of Lorentz violation on cosmology [J].

Arianto ;

Zen, Freddy P. ;

Gunara, Bobby E. ;

Triyantra ;

Supradi .

JOURNAL OF HIGH ENERGY PHYSICS, 2007, (09)

[5] Could dark energy be vector-like? -: art. no. 007 [J].

Armendáriz-Picón, C .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2004, (07) :123-144

[6] First-order formalism for dark energy and dust [J].

Bazeia, D. ;

Losano, L. ;

Rodrigues, J. J. ;

Rosenfeld, R. .

EUROPEAN PHYSICAL JOURNAL C, 2008, 55 (01) :113-117

[7] First-order formalism and dark energy [J].

Bazeia, D ;

Gomes, CB ;

Losano, L ;

Menezes, R .

PHYSICS LETTERS B, 2006, 633 (4-5) :415-419

[8] Models of baryogenesis via spontaneous Lorentz violation [J].

Carroll, Sean M. ;

Shu, Jing .

PHYSICAL REVIEW D, 2006, 73 (10)

[9] Instabilities in the aether [J].

Carroll, Sean M. ;

Dulaney, Timothy R. ;

Gresham, Moira I. ;

Tam, Heywood .

PHYSICAL REVIEW D, 2009, 79 (06)

[10] Lorentz-violating vector fields slow the universe down [J].

Carroll, SM ;

Lim, EA .

PHYSICAL REVIEW D, 2004, 70 (12) :6

← 1 2 3 →