Massive String Cosmological Model for Ferfect Fluid Distribution with Cosmological Term ? In Bimetric Theory of Gravitation

Authors

  • S. S. Charjan   Department of Mathematics, K. Z. S. Science College, Bramhani, Kalmeshwar, Dist. Nagpur, Maharashtra, India

Keywords:

Bimetric Gravitational Theory, Electromagnetic Field, Cosmology

Abstract

Massive string magnetized cosmological model for perfect fluid  distribution with cosmological term  is deduced by solving Rosen’s field equations. To deduce a determinate solution, the condition A =Bn(where,n> 0 real constants), between the metric potentials is used. It is seen that Massive string Bianchi Type I magnetized cosmological model (36) in bimetric theory of gravitation exists. It never goes to vacuum model . When , then ,  and when , then , . This confirms that the model is expanding as well as shearing. The expansion and the shear in the model increases as cosmic time  increases. Further when , then , . When   then  and , which shows that our model goes over to vacuum model, when the cosmic time  is minus infinity. In the special case, in the absence of magnetic field i.e., ,  it is seen that, our model (36) exists.  Also the expansion and shear in the model increases, as the cosmic time  increases.

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2018-04-30

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Volume 4, Issue 4, March-April-2018

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Research Articles

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[1]
S. S. Charjan "Massive String Cosmological Model for Ferfect Fluid Distribution with Cosmological Term ? In Bimetric Theory of Gravitation" International Journal of Scientific Research in Science, Engineering and Technology (IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 4, Issue 4, pp.1602-1610, March-April-2018.