Dilatonic interpolation between Reissner-Nordstrom and Bertotti-Robinson spacetimes with physical consequences - General Relativity and Quantum CosmologyReport as inadecuate




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Abstract: We give a general class of static, spherically symmetric, non-asymptoticallyflat and asymptotically non-anti de Sitter black hole solutions inEinstein-Maxwell-Dilaton EMD theory of gravity in 4-dimensions. In thisgeneral study we couple a magnetic Maxwell field with a general dilatonpotential, while double Liouville-type potentials are coupled with the gravity.We show that the dilatonic parameters play the key role in switching betweenthe Bertotti-Robinson and Reissner-Nordstr\-om spacetimes. We study thestability of such black holes under a linear radial perturbation, and in thissense we find exceptional cases that the EMD black holes are unstable. Incontinuation we give a detailed study of the spin-weighted harmonics indilatonic Hawking radiation spectrum and compare our results with thepreviously known ones. Finally, we investigate the status of resulting nakedsingularities of our general solution when probed with quantum test particles.



Author: S. Habib Mazharimousavi, M. Halilsoy, I. Sakalli, O. Gurtug

Source: https://arxiv.org/







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