Statefinder diagnostic for variable modified Chaplygin gas in Bianchi type-V universe

被引:6
|
作者
Adhav, K. S. [1 ]
机构
[1] Sant Gadge Baba Amravati Univ, Dept Math, Amravati 444602, India
关键词
Bianchi type-V space-time; Variable modified Chaplygin gas; Statefinder parameters; DARK ENERGY; ACCELERATING COSMOLOGIES; MODELS; DECELERATION; INFLATIONARY; QUINTESSENCE; CONSTRAINTS; PARAMETERS; ANISOTROPY; FLUID;
D O I
10.1007/s10509-011-0773-z
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The Bianchi type-V cosmological model with variable modified Chaplygin gas having the equation of state p=A rho-B/rho (alpha) , where 0a parts per thousand currency sign alpha a parts per thousand currency sign1, 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. While studying its role in accelerated phase of the universe, it is observed that the equation of state of the variable modified Chaplygin gas interpolates from radiation dominated era to quintessence dominated era. The statefinder diagnostic pair {r,s} is adopted to characterize different phases of the universe.
引用
收藏
页码:611 / 617
页数:7
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