COSMOLOGICAL MODEL WITH ULTRARELATIVISTIC IDEAL GAS USING GRAVITATIONAL AND THERMO–MECHANICAL HAMILTONIAM FORMULATION

Authors

Z.M. HAYMAN, Department of Astronomy, Faculty of Science, Cairo University, Cairo, Egypt
M.A. RASSEM, Department of Astronomy, Faculty of Science, Cairo University, Cairo, Egypt
M.N. ISMAEL, Department of Astronomy, Faculty of Science, Al-Azhar University, Cairo, Egypt.

Corresponding Author

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Document Type

Original Article

Subject Areas

Mathematics, Statistics, Computer Science, Physics and Astronomy

Keywords

Hamiltonian theory-spherically cosmological Model-Ultrarelativistic ideal gas

Abstract

A brief review of the Hamiltonian theory of self gravitating perfect fluid, which has been established by Kijowski et al (1990), has been discussed in this work. The formulation of the spherically symmetric cosmological problem has been derived. The most general 3-dimensional metric in the case of spherically symmetric space-time has been considered. In addition, the parameters which govern the dynamics have been fixed. The dynamical equations have been derived. The problem of homogeneous Universe has been considered for the Ultrarelativistic ideal gas. The dynamical equations have been derived. Three analytical solutions have been obtained.

How to Cite This Article

HAYMAN, Z.M.; RASSEM, M.A.; and ISMAEL, M.N. (2011) "COSMOLOGICAL MODEL WITH ULTRARELATIVISTIC IDEAL GAS USING GRAVITATIONAL AND THERMO–MECHANICAL HAMILTONIAM FORMULATION," Al-Azhar Bulletin of Science: Vol. 22: Iss. 2, Article 7.
DOI: https://doi.org/10.21608/absb.2011.7906