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5 papers
Electromagnetic Mass Models in General Theory of Relativity
Sumana Bhadra
"Electromagnetic mass" where gravitational mass and other physical quantities originate from the electromagnetic field alone has a century long distinguished history. In the introd…
Relativistic Electromagnetic Mass Models: Charged Dust Distribution in Higher Dimensions
Saibal Ray, Sumana Bhadra, G. Mohanti
Electromagnetic mass models are proved to exist in higher dimensional theory of general relativity corresponding to charged dust distribution. Along with the general proof a specif…
Relativistic anisotropic charged fluid spheres with varying cosmological constant
Saibal Ray, Sumana Bhadra, Anand S. Sengupta
Static spherically symmetric anisotropic source has been studied for the Einstein-Maxwell field equations assuming the erstwhile cosmological constant to be a space-variable s…
Classical Electron Model with Negative Energy Density in Einstein-Cartan Theory of Gravitation
Saibal Ray, Sumana Bhadra
Experimental result regarding the maximum limit of the radius of the electron \sim 10^{-16} cm and a few of the theoretical works suggest that the gravitational mass which is a pri…
Energy density in general relativity: a possible role for cosmological constant
Saibal Ray, Sumana Bhadra
We consider a static spherically symmetric charged anisotropic fluid source of finite physical radius (\sim 10^{-16} cm) by introducing a scalar variable Λdependent on the radial c…