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Friedmann–Lemaître–Robertson–Walker metric

About: Friedmann–Lemaître–Robertson–Walker metric is a research topic. Over the lifetime, 4113 publications have been published within this topic receiving 87752 citations. The topic is also known as: FLRW metric.


Papers
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Journal ArticleDOI
TL;DR: In this article, the existence or nonexistence of the discrete neutrino energy spectrum is connected, in the case of the standard cosmology, with the assumption that the universe is closed or not.
Abstract: The massless Dirac equation is separated in the Robertson-Walker geometry. The Schrodinger-like one-dimensional equation to which the problem is reduced is shown to admit a discrete positive spectrum. The existence or nonexistence of the discrete neutrino energy spectrum is connected, in the case of the standard cosmology, with the assumption that the universe is closed or not.

25 citations

Journal ArticleDOI
D. R. K. Reddy1
TL;DR: In this article, the self-creation theory of gravitation is solved for a vacuum with the aid of a space-time metric of Friedmann, and some physical properties of the solution are discussed.
Abstract: The field equations of the self-creation theory of gravitation proposed by Barber are solved for a vacuum with the aid of a space-time metric of Friedmann. Some physical properties of the solution are discussed.

25 citations

Journal ArticleDOI
TL;DR: In this article, it was shown that the Friedmann Ansatz for the metric and an arbitrary cosmological term can be consistently extended on include a spatiall]y homogeneous contorsion field K abc = ϵ abc K( t ), K ( t ) = η / R ( t ); η an arbitrary constant.

25 citations

Journal ArticleDOI
TL;DR: In this paper, a flat FLRW (Friedmann-Lemaitre-Robertson-Walker) cosmological model with perfect fluid comprising of variable Chaplygin gas (VCG) was studied in the context of f(R, T) gravity with particle creation.

25 citations

Journal ArticleDOI
TL;DR: In this paper, the exact solutions of the field equations are obtained by using the gamma law equation of state p=(γ−1)ρ in which the parameter γ depends on scale factor R.
Abstract: The exact solutions of the field equations are obtained by using the gamma law equation of state p=(γ−1)ρ in which the parameter γ depends on scale factor R. The fundamental form of γ(R) is used to analyze a wide range of phases in cosmic history: inflationary phase and radiation-dominated phase. The corresponding physical interpretations of cosmological solutions are also discussed in the framework of (n+2) dimensional space time.

25 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023150
2022352
2021196
2020204
2019214
2018191