Bianchi Type-I Massive String Magnetized Barotropic Perfect Fluid Cosmological Model in the Bimetric Theory of Gravitation

Autor:	N. P. Gaikwad, M. S. Borkar, S. S. Charjan
Rok vydání:	2011
Předmět:	Gravitation Physics Big Bang General Relativity and Quantum Cosmology Classical mechanics Barotropic fluid General Physics and Astronomy Perfect fluid Gravitational singularity Type (model theory) String (physics) Mathematical physics Magnetic field
Zdroj:	Chinese Physics Letters. 28:089803
ISSN:	1741-3540 0256-307X
Popis:	We investigate the Bianchi type-I massive string magnetized barotropic perfect fluid cosmological model in Rosen's bimetric theory of gravitation with and without a magnetic field by applying the techniques used by Latelier (1979, 1980) and Stachel (1983). To obtain a deterministic model of the universe, it is assumed that the universe is filled with barotropic perfect fluid distribution. The physical and geometrical significance of the model are discussed. By comparing our model with the model of Bali et al. (2007), it is realized that there are no big-bang and big-crunch singularities in our model and T = 0 is not the time of the big bang, whereas the model of Bali et al. starts with a big bang at T = 0. Further, our model is in agreement with Bali et al. (2007) as time increases in the presence, as well as in the absence, of a magnetic field.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f0c6986f259f258e8dcf71f0cbaa3f82 https://doi.org/10.1088/0256-307x/28/8/089803 Zobrazit plný text záznamu