RECONSTRUCTION OF MODIFIED GRAVITY WITH GHOST DARK ENERGY MODELS

被引：32

作者：

Khodam-Mohammadi, A. ^{[1
,2
]}

Malekjani, M. ^{[1
]}

Monshizadeh, M. ^{[3
]}

机构：

[1] Bu Ali Sina Univ, Fac Sci, Dept Phys, Hamadan 65178, Iran

[2] Shiraz Univ, Fac Sci, Dept Phys, Shiraz 71454, Iran

[3] Islamic Azad Univ, Fac Sci, Dept Phys, Hamedan Branch, Tehran, Iran

来源：

MODERN PHYSICS LETTERS A | 2012年 / 27卷 / 18期

关键词：

Ghosh dark energy; modified gravity; reconstruction f(R) gravity; phantom divide; COSMOLOGICAL CONSTANT; CURRENT-ALGEBRA; U(1); CONSTRAINTS; INFLATION; EXPANSION; RELEASE; LAMBDA;

D O I：

10.1142/S0217732312501003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work, were construct the f(R) modified gravity for different ghost and generalized-ghost dark energy (DE) models in FRW flat universe, which describes the accelerated expansion of the universe. The equation of state and deceleration parameter of reconstructed f(R) gravity have been calculated. The equation of state and deceleration parameter of reconstructed f(R)-ghost/generalized-ghost DE, have been calculated. We show that the corresponding f(R) gravity of ghost/generalized-ghost DE model can behave like phantom or quintessence. Also the transition between deceleration to acceleration regime is indicated by deceleration parameter diagram for reconstructed f(R) generalized-ghost DE model.

引用

页数：11

共 74 条

[31] Gluonic vacuum, q-theory, and the cosmological constant [J].