Cosmological model
An Exact Scalar Field Inflationary Cosmological Model Which Solves Cosmological Constant Problem, Dark Matter Problem and Other Problems of Inflationary Cosmology
... field cosmological model is constructed from the exact solution of the field ...The model gives inflation, solves horizon and flatness problems. The model also gives a satisfactory estimate of ...
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KiDS-450: testing extensions to the standard cosmological model
... We test extensions to the standard cosmological model with weak gravitational lensing to- mography using 450 deg 2 of imaging data from the Kilo Degree Survey (KiDS). In these extended cosmologies, which ...
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Bianchi Type VI0 String Cosmological Model for Barotropic Fluid Distribution with Cosmological Term
... dust cosmological model for barotropic fluid distribution with vacuum energy density in FRW space-time is investigated by Bali and Bola ...type-VI cosmological model containing dark ...0 ...
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Energy-Momentum Tensor and Parameters in Cosmological Model
... the cosmological constant Λ are two most important parameters, whose values have strong influence on the behavior of the ...of cosmological model, we get the following results: (i) K = 1, namely, the ...
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An analysis of Cosmological Constant of Uniform Cosmological Model using Brans- Dicke Cosmology
... isotropic cosmological models in Brans-Dicke theory have been ...the cosmological term Λ ( ) ξ to the Brans-Dicke Lagrangian using Robertson-Walker line element and energy tensor of a perfect fluid were ...
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The Standard Cosmological Model: Basic Geometric and Kinematic Features
... Abstract: We present a brief history of the construction of models of the universe, followed by calculations of quantitative characteristics of basic geometric and kinematic properties of the Standard Cosmological ...
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Behavior of bulk viscous Bianchi v cosmological model in f(r) theory of gravity
... Bianchi type models are important because these are homogeneous and anisotropic, from which the process of isotropization of the universe is studied through the passage of time. From the theoretical point of view ...
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Anisotropic Dark Energy Cosmological Model in Lyra Geometry
... In present paper, we have investigated the homogeneous and anisotropic new form of Bianchi type cosmological model within the framework of Lyra geometry. In order to determine the exact solution, we have ...
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2 A Cosmological Model with Varying G and ∧ in General Relativity
... anisotropic Cosmological models play a significant role in the description of the early stages of evolution of the ...the cosmological constant is still ...type–I Cosmological model ...the ...
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1 A Cosmological Model with Varying G and ∧ in General Relativity
... type-I cosmological model with variable G and in presence of perfect fluid with cos-mological term is proportional to H2 (H is Hub-ble Parameter) suggested by Silveira et ...the model has a point ...
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Some Discussion of Gravitational constant and cosmological constant Using Bianchi Type-I cosmological Model
... .The term Λ arises naturally in general relativistic quantum field theory, where it is interpreted as the energy density of the vacuum[1-4].Some authors [5-9] argued for the dependence of Λ . Bianchi Type-I models are ...
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Development of Einstein’s Static Cosmological Model of the Universe
... The constant 0 in equation [35] is such that its effect is negligible for the phenomenon in the solar system or even in our own galaxy, but becomes important when the universe as a whole is considered. By combining ...
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Polytropic Bulk Viscous Cosmological Model with Variable G and Λ
... type-II cosmological model with a decaying lambda term and Tiwari [21] investigated the Bianchi type-I cosmological models with perfect fluid in general ...
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New Cosmological Model and Its Implications on Observational Data Interpretation
... shell cosmological model that allows for a di ff erent interpretation of the CMB data and for inhomogeneity of the universe at the early ...standard model without ...
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Einstein Rosen Mesonic Perfect Fluid Cosmological Model with Time Dependent Λ Term
... Very recently Adhav et al. [22] have studied cylindrically symmetric Einstein Rosen cosmological model with wet dark fluid (WDF) in general relativity. Katore et al. [23] have investigated cylindrically ...
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Decelerating Non Static Plane Symmetric cosmological Model with Varying
... in cosmological constant problem in ...varying cosmological term, which decays from huge to small in an expanding universe ...phenomenological model have been suggested by [5-17]. The ...
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An alternative to dark matter? A cosmological model of galaxy rotation using cosmological gravity force, F
... The cosmological principle states, at least, that there are no preferred ...rotation model for a few galaxies with the combined action of gravitational force and cosmological gravity, that initial ...
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A Cosmological Model without Singularity Based on RW Metric (1)
... which is equivalent to 1 − η C mg 2 4 C γ g > 0 , we can get a curve of a t ( ) which describes evolution of the cosmological scale. The curves A and B show that when the parameters alter in a definte scope, ...
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Cosmological Model: A New Approach
... As it is known, ―Olberparadox‖ is based on the fact that the existence of billions of galaxies homogeneously distributed in space would produce a starlit sky at nights; one of the reasons for the success of an ―Expanding ...
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