Viscous Bianchi Type I Universe with Stiff Matter and Decaying Vacuum Energy Density
Joint Authors
Bali, Raj
Singh, J. P.
Singh, Pratibha
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-06-20
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
We examine homogeneous and anisotropic Bianchi type I cosmological model with viscous stiff matter and time-varying cosmological term Λ which scales with Hubble parameter H.
The resulting model approaches isotropy.
The cosmological term Λ relaxes to a genuine cosmological constant, and the model in the absence of bulk viscosity tends to a deSitter universe asymptotically.
Our scenario presents an initial epoch with decelerating expansion followed by late-time acceleration consistent with observations.
Bulk viscosity advances the accelerating phase in the model and prevents the matter density to vanish for large times.
American Psychological Association (APA)
Bali, Raj& Singh, Pratibha& Singh, J. P.. 2012. Viscous Bianchi Type I Universe with Stiff Matter and Decaying Vacuum Energy Density. ISRN Mathematical Physics،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-491933
Modern Language Association (MLA)
Bali, Raj…[et al.]. Viscous Bianchi Type I Universe with Stiff Matter and Decaying Vacuum Energy Density. ISRN Mathematical Physics No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-491933
American Medical Association (AMA)
Bali, Raj& Singh, Pratibha& Singh, J. P.. Viscous Bianchi Type I Universe with Stiff Matter and Decaying Vacuum Energy Density. ISRN Mathematical Physics. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-491933
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-491933