Bianchi Type-III String Cosmological Model with Bulk Viscous Fluid in Lyra Geometry

2017 ◽  
Vol 41 (1) ◽  
pp. 243-248 ◽  
Author(s):  
P. K. Sahoo ◽  
A. Nath ◽  
S. K. Sahu
Keyword(s):  
Cosmological Model ◽  
Viscous Fluid ◽  
Bianchi Type ◽  
Lyra Geometry ◽  
Type Iii ◽  
String Cosmological Model ◽  
Bulk Viscous Fluid ◽  
Bulk Viscous

scholarly journals Anisotropic Bianchi Type-III Bulk Viscous Fluid Universe in Lyra Geometry

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Priyanka Kumari ◽  
M. K. Singh ◽  
Shri Ram
Keyword(s):  
Cosmological Model ◽  
Viscous Fluid ◽  
Bianchi Type ◽  
Lyra Geometry ◽  
Scale Factor ◽  
Field Equations ◽  
Type Iii ◽  
Bulk Viscous Fluid ◽  
Bulk Viscous ◽  
The Universe

An anisotropic Bianchi type-III cosmological model is investigated in the presence of a bulk viscous fluid within the framework of Lyra geometry with time-dependent displacement vector. It is shown that the field equations are solvable for any arbitrary function of a scale factor. To get the deterministic model of the universe, we have assumed that (i) a simple power-law form of a scale factor and (ii) the bulk viscosity coefficient are proportional to the energy density of the matter. The exact solutions of the Einstein’s field equations are obtained which represent an expanding, shearing, and decelerating model of the universe. Some physical and kinematical behaviors of the cosmological model are briefly discussed.

scholarly journals Dust Fluid Cosmological Model

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Anita Bagora (Menaria) ◽  
Rakeshwar Purohit
Keyword(s):  
Cosmological Model ◽  
Viscous Fluid ◽  
Physical Properties ◽  
Bulk Viscosity ◽  
Bianchi Type ◽  
Type I ◽  
Bulk Viscous Fluid ◽  
Bulk Viscous ◽  
Dust Fluid ◽  
Hubble Parameters

Bianchi type I tilted bulk viscous fluid cosmological model filled with dust fluid is investigated. We assume that (constant), where is the coefficient of bulk viscosity and is the expansion in the model. It has been assumed that the expansion in the model is only in two directions; that is, one of the components of Hubble parameters is zero. The physical and geometrical aspects of the model in the presence and absence of bulk viscosity are also discussed. Also, we have discussed two special models and their physical properties. From this, we present a particular example based on dust fluid.

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