CHAOTIC INFLATIONARY SCENARIO IN BIANCHI TYPE I SPACETIME

2012 ◽  
Vol 27 (09) ◽  
pp. 1250049 ◽  
Author(s):  
RAJ BALI
Keyword(s):  
Energy Density ◽  
Bianchi Type ◽  
Type I ◽  
Inflationary Model ◽  
Bianchi Type I ◽  
Inflationary Scenario ◽  
Inflationary Phase ◽  
Chaotic Model ◽  
Frw Model ◽  
Frame Work

Chaotic inflationary model of the early universe proposed by Linde7 is investigated in the frame work of Bianchi type I spacetime. To determine inflationary scenario, we assume that scale factor [Formula: see text], λ being a constant, m the mass, V(ϕ) the potential energy density. It is shown that chaotic model leads to an inflationary phase which also helps in isotropization process. The Higg's field (ϕ) is initially large but decreases due to lapse of time in both cases. The assumption R3 = ABC~e3Ht does not lead to FRW model immediately but for large values of t, it reduces to FRW model since shear σ = 0 in FRW model and shear σ ≠ 0 in Bianchi type I model. The physical aspects of the model are also discussed.

scholarly journals Rainbow Gravity: Big Bounce in Bianchi Type I Universe

2019 ◽  
Vol 206 ◽  
pp. 09012 ◽  
Author(s):  
Wesley Wong ◽  
Chee Leong Ching ◽  
Wei Khim Ng
Keyword(s):  
Energy Density ◽  
Gravity Model ◽  
Dynamical Equation ◽  
Bianchi Type ◽  
Negative Energy ◽  
Type I ◽  
Bianchi Type I ◽  
Negative Energy Density ◽  
Bianchi Type I Universe ◽  
Big Bounce

We will examine the Bianchi Type I universe under the Rainbow Gravity formalism and calculate various quantities like the dynamical equation for the energy density and the negative energy density. Finally, we apply the analysis to a specific Rainbow Gravity model.

CHAOTIC INFLATIONARY SCENARIO IN AN ANISOTROPIC UNIVERSE

1986 ◽  
Vol 01 (02) ◽  
pp. 149-155 ◽  
Author(s):  
B.C. PAUL ◽  
D.P. DATTA ◽  
S. MUKHERJEE
Keyword(s):  
Early Universe ◽  
Anisotropic Universe ◽  
Inflationary Model ◽  
Inflationary Scenario ◽  
Inflationary Phase ◽  
Chaotic Model ◽  
The Universe

The chaotic inflationary model of the early universe, proposed by Linde is studied within the framework of an anisotropic Kantowski-Sachs cosmology. It is shown that the chaotic model naturally leads to an inflationary phase which also helps in the isotropization of the universe.

Aspects of inflation in spatially homogeneous and anisotropic Bianchi Type I spacetime with exponential potential

2018 ◽  
Vol 33 (40) ◽  
pp. 1850238 ◽  
Author(s):  
Raj Bali
Keyword(s):  
Bianchi Type ◽  
Scale Factor ◽  
Type I ◽  
Exponential Potential ◽  
Bianchi Type I ◽  
Inflationary Scenario ◽  
Spatial Volume ◽  
Spatially Homogeneous ◽  
Special Case ◽  
Average Scale Factor

The inflationary scenario in spatially homogeneous and anisotropic Bianchi Type I spacetime with exponential potential [Formula: see text], [Formula: see text] and average scale factor (R) is considered as [Formula: see text] is discussed. The model isotropizes in special case and asymptotically. The spatial volume increases with time representing inflationary scenario and the expansion continues for long enough, thus solving the horizon problem. The model represents decelerating and accelerating phases of universe in special case. Also, the model is singularity free at t = 0. In special case, i.e. when constants b = 0, k = 0, then the model leads to FLRW model for which we have the average scale factor [Formula: see text], [Formula: see text] and deceleration parameter [Formula: see text]. This paper gives the answer why anisotropic and homogeneous Bianchi Type I spacetime is considered than FRW model to discuss inflationary scenario.

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