Oishi Khanam; Md. Nirab Hossain; Md. Showkat Ali

Future Possible Age of the Universe with Density Variation

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Author(s)

Oishi Khanam ^1,* Md. Nirab Hossain ¹ Md. Showkat Ali ¹

1. Department of Applied Mathematics, University of Dhaka, Dhaka 1000, Bangladesh

* Corresponding author.

DOI: https://doi.org/10.5815/ijmsc.2022.04.07

Received: 18 Feb. 2022 / Revised: 11 May 2022 / Accepted: 19 Jun. 2022 / Published: 8 Oct. 2022

Index Terms

Friedmann equation, Radiation domination, Matter domination, Raychaudhuri equation

Abstract

A fundamental principle and assumption of cosmology says that the universe is homogeneous and isotropic when viewed on a large scale. According to the cosmological principle, space might be flat, or have a negative or positive curvature in cosmological model. Positively curved universe denotes the closed universe and negatively curved universe denotes the open universe. Our universe type is flat because it expands in every direction neither curving positively nor negatively. We have observed that the progression of the universe is based on radiation and matter domination. In this paper we also have observed that future possible upper limit age of the universe is 9.4203×〖10〗^10 years which varies with density.

Cite This Paper

Oishi Khanam, Md. Nirab Hossain, Md. Showkat Ali, "Future Possible Age of the Universe with Density Variation", International Journal of Mathematical Sciences and Computing(IJMSC), Vol.8, No.4, pp. 72-80, 2022. DOI: 10.5815/ijmsc.2022.04.07

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International Journal of Mathematical Sciences and Computing (IJMSC)