PhilSci Archive

Time Variation of the Matter Content of the Expanding Universe in the Framework of Brans-Dicke Theory

Roy, Sudipto (2018) Time Variation of the Matter Content of the Expanding Universe in the Framework of Brans-Dicke Theory. [Preprint]

[img]
Preview
Text
article-S.Roy.pdf

Download (407kB) | Preview

Abstract

In the framework of Brans-Dicke theory, a cosmological model regarding the expanding universe has been formulated by considering an inter-conversion of matter and dark energy. A function of time has been incorporated into the expression of the density of matter to
account for the non-conservation of the matter content of the universe. This function is proportional to the matter content of the universe. Its functional form is determined by using empirical expressions of the scale factor and the scalar field in field equations. This scale factor has been chosen to generate a signature flip of the deceleration parameter with time. The matter content is found to decrease with time monotonically, indicating a conversion of matter into dark energy. This study leads us to the expressions of the proportions of matter and dark energy of the universe. Dependence of various cosmological parameters upon the matter content has been explored.


Export/Citation: EndNote | BibTeX | Dublin Core | ASCII/Text Citation (Chicago) | HTML Citation | OpenURL
Social Networking:
Share |

Item Type: Preprint
Creators:
CreatorsEmailORCID
Roy, Sudiptoroy.sudipto1@gmail.com0000-0002-8811-2511
Keywords: Matter to dark energy conversion, Brans-Dicke theory, Time variation of matter and dark energy, Gravitational constant, Density of matter, Cosmology
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics
Specific Sciences > Physics > Relativity Theory
Depositing User: Dr. Sudipto Roy
Date Deposited: 15 Apr 2018 17:52
Last Modified: 15 Apr 2018 17:52
Item ID: 14565
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics
Specific Sciences > Physics > Relativity Theory
Date: 15 April 2018
URI: https://philsci-archive-dev.library.pitt.edu/id/eprint/14565

Monthly Views for the past 3 years

Monthly Downloads for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item