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Magnetized black holes and nonlinear electrodynamics
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Magnetized black holes and nonlinear electrodynamics
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A new model of nonlinear electrodynamics with two parameters is proposed. We study the phenomenon of vacuum birefringence, the causality and unitarity in this model. There is no singularity of the electric field in the center of point-like charges and the total electrostatic energy is finite. We obtain corrections to the Coulomb law at $r\rightarrow\infty$. The weak, dominant and strong energy conditions are investigated. Magnetized charged black hole is considered and we evaluate the mass, metric function and their asymptotic at $r\rightarrow\infty$ and $r\rightarrow 0$. The magnetic mass of the black hole is calculated. The thermodynamic properties and thermal stability of regular black holes are discussed. We calculate the Hawking temperature of black holes and show that there are first-order and second-order phase transitions. The parameters of the model when the black hole is stable are found.
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Cited by 1 Pith paper
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The Euler-Heisenberg action for a $U(1)\times U(1)$ dyon quantum electrodynamics
One-loop Euler-Heisenberg Lagrangian for U(1)×U(1) dyon QED produces hybrid refractive indices and vacuum birefringence that reduce exactly to ordinary QED when magnetic charge vanishes.
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