GENERALIZED MODEL FOR Λ DARK ENERGY

被引：8

作者：

Mukhopadhyay, Utpal ^{[1
]}

Ray, P. C. ^{[2
]}

Ray, Saibal ^{[3
]}

Choudhury, S. B. Dutta ^{[4
]}

机构：

[1] Satyabharati Vidyapith, Kolkata 700126, W Bengal, India

[2] Govt Coll Engn & Leather Technol, Dept Math, Kolkata 700098, W Bengal, India

[3] Barasat Govt Coll, Dept Phys, Kolkata 700124, W Bengal, India

[4] Jadavpur Univ, Dept Phys, Kolkata 700032, W Bengal, India

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2009年 / 18卷 / 03期

关键词：

Dark energy; Lambda model; curvature constant; HIGH-REDSHIFT SUPERNOVAE; PROBE WMAP OBSERVATIONS; HUBBLE-SPACE-TELESCOPE; ACCELERATING UNIVERSE; COSMOLOGICAL CONSTANT; Z-GREATER-THAN-1; DECELERATION; CONSTRAINTS;

D O I：

10.1142/S021827180901456X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Einstein field equations under spherically symmetric space-times are considered here in connection with dark energy investigation. A set of solutions is obtained for a kinematic. model, viz. Lambda ((a) over dot/a)(2), without assuming any a priori value for the curvature constant and the equation-of-state parameter omega. Some interesting results, such as the nature of cosmic density Omega and deceleration parameter q, have been obtained with the consideration of two-fluid structure instead of the usual unifluid cosmological model.

引用

页码：389 / 396

页数：8

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