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Chin. Phys. B, 2011, Vol. 20(2): 020402    DOI: 10.1088/1674-1056/20/2/020402
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Nonlinear electrodynamics coupled to teleparallel theory of gravity

Gamal G. L. Nashed
Mathematics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
Abstract  Using nonlinear electrodynamics coupled to teleparallel theory of gravity, regular charged spherically symmetric solutions are obtained. The nonlinear theory is reduced to the Maxwell one in the weak limit and the solutions correspond to charged spacetimes. One of the obtained solutions contains an arbitrary function which we call general solution since we can generate from it the other solutions. The metric associated with these spacetimes is the same, i.e., regular charged static spherically symmetric black hole. In calculating the energy content of the general solution using the gravitational energy–momentum within the framework of the teleparallel geometry, we find that the resulting form depends on the arbitrary function. Using the regularized expression of the gravitational energy–momentum we obtain the value of energy.
Keywords:  tetrad theory of gravitation      nonlinear electrodynamics      spherically symmetric black holes      gravitational energy–momentum  
Received:  08 April 2010      Revised:  02 September 2010      Accepted manuscript online: 
PACS:  04.20.-q (Classical general relativity)  
  04.20.Cv (Fundamental problems and general formalism)  
  04.20.Jb (Exact solutions)  
  04.40.Nr (Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields)  

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Gamal G. L. Nashed Nonlinear electrodynamics coupled to teleparallel theory of gravity 2011 Chin. Phys. B 20 020402

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