Acceleration of the universe with a simple trigonometric potential

被引：84

作者：

Banerjee, N ^{[1
]}

Das, S ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Phys, Relat & Cosmol Res Ctr, Kolkata 700032, W Bengal, India

来源：

GENERAL RELATIVITY AND GRAVITATION | 2005年 / 37卷 / 10期

关键词：

quintessence model; cosmology; scalar field;

D O I：

10.1007/s10714-005-0152-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we investigate the quintessence model with a minimally coupled scalar field in the context of recent supernovae observations. By choosing a particular form of the deceleration parameter q, which gives an early deceleration and late time acceleration for the dust dominated model, we show that this sign flip in q can be obtained by a simple trigonometric potential. The early matter dominated model expands with q = 1/2 as desired and enters a negative q phase quite late during the evolution.

引用

页码：1695 / 1703

页数：9

共 35 条

[1] Acceleration at z > 1? [J].

Amendola, L .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 342 (01) :221-226

[2]

[Anonymous], 1995, COSMOLOGY ORIGIN EVO

[3] Constraints on cosmological parameters from MAXIMA-1 [J].

Balbi, A ;

Ade, P ;

Bock, J ;

Borrill, J ;

Boscaleri, A ;

De Bernardis, P ;

Ferreira, PG ;

Hanany, S ;

Hristov, V ;

Jaffe, AH ;

Lee, AT ;

Oh, S ;

Pascale, E ;

Rabii, B ;

Richards, RL ;

Smoot, GF ;

Stompor, R ;

Winant, CD ;

Wu, JHP .

ASTROPHYSICAL JOURNAL, 2000, 545 (01) :L1-L4

[4] A quintessence scalar field in Brans-Dicke theory [J].

Banerjee, N ;

Pavón, D .

CLASSICAL AND QUANTUM GRAVITY, 2001, 18 (04) :593-599

[5] Cosmic acceleration without quintessence -: art. no. 043504 [J].

Banerjee, N ;

Pavón, D .

PHYSICAL REVIEW D, 2001, 63 (04)

[6] Generalized Chaplygin gas, accelerated expansion, and dark-energy-matter unification [J].

Bento, MC ;

Bertolami, O ;

Sen, AA .

PHYSICAL REVIEW D, 2002, 66 (04)

[7]

BENTO MC, ASTROPH0210468

[8] Nonminimal coupling and quintessence [J].

Bertolami, O ;

Martins, PJ .

PHYSICAL REVIEW D, 2000, 61 (06)

[9] Reconstruction of a scalar-tensor theory of gravity in an accelerating universe [J].

Boisseau, B ;

Esposito-Farèse, G ;

Polarski, D ;

Starobinsky, AA .

PHYSICAL REVIEW LETTERS, 2000, 85 (11) :2236-2239

[10] Cosmological imprint of an energy component with general equation of state [J].

Caldwell, RR ;

Dave, R ;

Steinhardt, PJ .

PHYSICAL REVIEW LETTERS, 1998, 80 (08) :1582-1585

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