Generalized chaplygin gas with α=0 and the ΛCDM cosmological model

被引：24

作者：

Fabris, JC ^{[1
]}

Gonçalves, SVB ^{[1
]}

Ribeiro, RD ^{[1
]}

机构：

[1] Univ Fed Espirito Santo, Dept Fis, Vitoria 29060900, Espirito Santo, Spain

来源：

GENERAL RELATIVITY AND GRAVITATION | 2004年 / 36卷 / 01期

关键词：

universe model; cold dark matter; gas;

D O I：

10.1023/B:GERG.0000006967.34989.a4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The generalized Chaplygin gas model is characterized by the equation of state p = -A/rho(alpha). It is generally stated that the case alpha = 0 is equivalent to a model with cosmological constant and dust (LambdaCDM). In this work we show that, if this is true for the background equations, this is not true for the perturbation equations. Hence, the mass spectrum predicted for both models may differ.

引用

页码：211 / 216

页数：6

共 14 条

[1] AVELINO PP, ASTROPH0306493
[2] Are Chaplygin gases serious contenders for the dark energy?: art. no. 023515
Bean, R
Doré, O
[J]. PHYSICAL REVIEW D, 2003, 68 (02)
[3] Generalized Chaplygin gas, accelerated expansion, and dark-energy-matter unification
Bento, MC
Bertolami, O
Sen, AA
[J]. PHYSICAL REVIEW D, 2002, 66 (04):
[4] Cosmological imprint of an energy component with general equation of state
Caldwell, RR
Dave, R
Steinhardt, PJ
[J]. PHYSICAL REVIEW LETTERS, 1998, 80 (08) : 1582 - 1585
[5] COLES P, 1995, COSMOLOGY
[6] COLISTETE R, ASTROPH0303338
[7] CUNHA JV, ASTROPH0306319
[8] Density perturbations in a universe dominated by the Chaplygin gas
Fabris, JC
Gonçalves, SVB
de Souza, PE
[J]. GENERAL RELATIVITY AND GRAVITATION, 2002, 34 (01) : 53 - 63
[9] An alternative to quintessence
Kamenshchik, A
Moschella, U
Pasquier, V
[J]. PHYSICS LETTERS B, 2001, 511 (2-4) : 265 - 268
[10] MAKLER M, ASTROPH0306507

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