Bianchi Type-VI Anisotropic Dark Energy Model with Varying EoS Parameter

被引：7
作者：
Saha, Bijan [1 ]
机构：
[1] Joint Inst Nucl Res, Informat Technol Lab, Dubna 141980, Moscow Region, Russia
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2013年 / 52卷 / 10期
关键词：
Homogeneous cosmological models; Perfect fluid; Dark energy; EoS parameter; HUBBLE-SPACE-TELESCOPE; HIGH-REDSHIFT SUPERNOVAE; COSMOLOGY; UNIVERSE; CONSTRAINTS; FIELDS; MAPS;
D O I：
10.1007/s10773-013-1670-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Within the scope of an anisotropic Bianchi type-VI cosmological model we have studied the evolution of the universe filled with perfect fluid and dark energy. To get the deterministic model of Universe, we assume that the shear scalar (sigma) in the model is proportional to expansion scalar (I). This assumption allows only isotropic distribution of fluid. Exact solution to the corresponding equations are obtained. The EoS parameter for dark energy as well as deceleration parameter is found to be the time varying functions. Using the observational data qualitative picture of the evolution of the universe corresponding to different of its stages is given. The stability of the solutions obtained is also studied.
引用
收藏
页码：3646 / 3657
页数：12
相关论文
共 28 条
[11]   Discovery of a supernova explosion at half the age of the Universe [J].
Perlmutter, S ;
Aldering, G ;
Della Valle, M ;
Deustua, S ;
Ellis, RS ;
Fabbro, S ;
Fruchter, A ;
Goldhaber, G ;
Groom, DE ;
Hook, IM ;
Kim, AG ;
Kim, MY ;
Knop, RA ;
Lidman, C ;
McMahon, RG ;
Nugent, P ;
Pain, R ;
Panagia, N ;
Pennypacker, CR ;
Ruiz-Lapuente, P ;
Schaefer, B ;
Walton, N .
NATURE, 1998, 391 (6662) :51-54
[12]   Measurements of Ω and Λ from 42 high-redshift supernovae [J].
Perlmutter, S ;
Aldering, G ;
Goldhaber, G ;
Knop, RA ;
Nugent, P ;
Castro, PG ;
Deustua, S ;
Fabbro, S ;
Goobar, A ;
Groom, DE ;
Hook, IM ;
Kim, AG ;
Kim, MY ;
Lee, JC ;
Nunes, NJ ;
Pain, R ;
Pennypacker, CR ;
Quimby, R ;
Lidman, C ;
Ellis, RS ;
Irwin, M ;
McMahon, RG ;
Ruiz-Lapuente, P ;
Walton, N ;
Schaefer, B ;
Boyle, BJ ;
Filippenko, AV ;
Matheson, T ;
Fruchter, AS ;
Panagia, N ;
Newberg, HJM ;
Couch, WJ .
ASTROPHYSICAL JOURNAL, 1999, 517 (02) :565-586
[13]   Bianchi Type-I Anisotropic Dark Energy Model with Constant Deceleration Parameter [J].
Pradhan, Anirudh ;
Amirhashchi, H. ;
Saha, Bijan .
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2011, 50 (09) :2923-2938
[14]   An interacting and non-interacting two-fluid scenario for dark energy in FRW universe with constant deceleration parameter [J].
Pradhan, Anirudh ;
Amirhashchi, Hassan ;
Saha, Bijan .
ASTROPHYSICS AND SPACE SCIENCE, 2011, 333 (01) :343-350
[15]   Type Ia supernova discoveries at z > 1 from the Hubble Space Telescope:: Evidence for past deceleration and constraints on dark energy evolution [J].
Riess, AG ;
Strolger, LG ;
Tonry, J ;
Casertano, S ;
Ferguson, HC ;
Mobasher, B ;
Challis, P ;
Filippenko, AV ;
Jha, S ;
Li, WD ;
Chornock, R ;
Kirshner, RP ;
Leibundgut, B ;
Dickinson, M ;
Livio, M ;
Giavalisco, M ;
Steidel, CC ;
Benítez, T ;
Tsvetanov, Z .
ASTROPHYSICAL JOURNAL, 2004, 607 (02) :665-687
[16]   Nonlinear spinor field in cosmology [J].
Saha, B .
PHYSICAL REVIEW D, 2004, 69 (12)
[17]   Spinor Field with Induced Nonlinearity in Bianchi VI Cosmology: Exact and Numerical Solutions [J].
Saha, B. .
GRAVITATION & COSMOLOGY, 2010, 16 (02) :160-167
[18]   Bianchi Type-V Dark Energy Model with Varying EoS Parameter [J].
Saha, Bijan .
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2013, 52 (04) :1314-1325
[19]   Two-fluid scenario for dark energy models in an FRW universe-revisited [J].
Saha, Bijan ;
Amirhashchi, Hassan ;
Pradhan, Anirudh .
ASTROPHYSICS AND SPACE SCIENCE, 2012, 342 (01) :257-267
[20]   Nonlinear Spinor Fields and Its Role in Cosmology [J].
Saha, Bijan .
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2012, 51 (06) :1812-1837
123