Statefinder Diagnostic for Variable Modified Chaplygin Gas in LRS Bianchi Type I Universe

被引:5
|
作者
Adhav, K. S. [1 ]
机构
[1] St Gadge Baba Amravati Univ, Dept Math, Amravati 444602, India
关键词
DARK-ENERGY; ACCELERATING COSMOLOGIES; COSMIC ACCELERATION; SCALAR FIELD; MATTER; COMPACTIFICATION; INFLATION; QUINTESSENCE; UNIFICATION; PARAMETERS;
D O I
10.1155/2012/714350
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The Locally Rotationally Symmetric (LRS) Bianchi type I cosmological model with variable modified Chaplygin gas having the equation of state p = A rho - B/rho(alpha), where 0 <= alpha <= 1, A is a positive constant, and B is a positive function of the average-scale factor a(t) of the universe (i.e., B = B(a)) has been studied. It is shown that the equation of state of the variable modified Chaplygin gas interpolates from radiation-dominated era to quintessence-dominated era. The statefinder diagnostic pair (i.e., {r, s} parameter) is adopted to characterize different phases of the universe.
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页数:11
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