Cosmological constant in the Bianchi type-I-modified Brans-Dicke cosmology

Pramana ◽  
2003 ◽  
Vol 60 (1) ◽  
pp. 21-27 ◽  
Author(s):  
A. K. Azad ◽  
J. N. Islam
Keyword(s):  
Cosmological Constant ◽  
Bianchi Type ◽  
Type I ◽  
Bianchi Type I

scholarly journals Bianchi Type-I Universe with Cosmological Constant and Quadratic Equation of State inf(R,T)Modified Gravity

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
G. P. Singh ◽  
Binaya K. Bishi
Keyword(s):  
Equation Of State ◽  
Cosmological Constant ◽  
Modified Gravity ◽  
Bianchi Type ◽  
Quadratic Equation ◽  
Type I ◽  
Field Equations ◽  
Bianchi Type I ◽  
Bianchi Type I Universe ◽  
Quadratic Equation Of State

This paper deals with the study of Bianchi type-I universe in the context off(R,T)gravity. Einstein’s field equations inf(R,T)gravity have been solved in the presence of cosmological constantΛand quadratic equation of state (EoS)p=αρ2-ρ, whereα≠0is a constant. Here, we have discussed two classes off(R,T)gravity; that is,f(R,T)=R+2f(T)andf(R,T)=f1(R)+f2(T). A set of models has been taken into consideration based on the plausible relation. Also, we have studied some physical and kinematical properties of the models.

scholarly journals Generation via Limiting Procedures of New Solutions in a Nonsymmetric Gravitational Theory

1992 ◽  
Vol 45 (6) ◽  
pp. 739
Author(s):  
EJ Vlachynsky
Keyword(s):  
Cosmological Constant ◽  
Bianchi Type ◽  
Gravitational Theory ◽  
Type I ◽  
Field Equations ◽  
Bianchi Type I ◽  
Static Solutions

New electromagnetic Bianchi type I solutious with nonzero cosmological constant, which satisfy the field equations of a nonsymmetric gravitational theory, are obtained from static solutions. This is achieved by taking a limit of the nonsymmetric tatic solutions.

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