Bianchi type-I cosmological model for perfect fluid distribution in Lyra geometry

2008 ◽  
Vol 49 (3) ◽  
pp. 032502 ◽  
Author(s):  
Raj Bali ◽  
Naresh Kumar Chandnani
Keyword(s):  
Cosmological Model ◽  
Perfect Fluid ◽  
Bianchi Type ◽  
Lyra Geometry ◽  
Fluid Distribution ◽  
Type I ◽  
Perfect Fluid Distribution ◽  
Bianchi Type I

Homothetic vector fields in a specially homogenous Bianchi type-I cosmological model in Lyra geometry

2015 ◽  
Vol 93 (11) ◽  
pp. 1397-1401 ◽  
Author(s):  
A.S. Alofi ◽  
Ragab M. Gad
Keyword(s):  
Cosmological Model ◽  
Riemannian Geometry ◽  
Vector Fields ◽  
Bianchi Type ◽  
Displacement Vector ◽  
Lyra Geometry ◽  
Type I ◽  
Bianchi Type I ◽  
Homothetic Vector ◽  
Vector Formula

In this paper, homothetic vector fields of a spatially homogenous Bianchi type-I cosmological model have been evaluated based on Lyra geometry. Further, we investigate the equation of state in cases when a displacement vector [Formula: see text] is a function of t and when it is constant. We give a comparison between the obtained results, using Lyra geometry, and those obtained previously in the context of general relativity, based on Riemannian geometry.

Bianchi type-I perfect-fluid multidimensional cosmological model

1989 ◽  
Vol 103 (3) ◽  
pp. 221-226
Author(s):  
M. Demianski ◽  
A. Bersani ◽  
M. Litterio
Keyword(s):  
Cosmological Model ◽  
Perfect Fluid ◽  
Bianchi Type ◽  
Type I ◽  
Bianchi Type I
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