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Thermodynamics of 4-dimensional charged black holes in Brans-Dicke-Born-Infeld gravity theory

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Abstract

In this work, the charged black hole solution to the Brans-Dicke gravity theory in the presence of the nonlinear electrodynamics has been investigated. To simplify the field equations, a suitable conformal transformation has been used which transforms the Brans-Dicke-Born-Infeld Lagrangian to that of Einstein-dilaton theory with new nonlinear electrodynamics field. A new class of 4-dimensional black hole solution has been constructed out as the exact solution to the Brans-Dicke theory in the presence of the Born-Infeld nonlinear electrodynamics. The physical properties of the solutions have been studied. The black hole charge and temperature have been calculated making use of the Gauss’s law and the concept of surface gravity, respectively. Also, the black hole mass and entropy have been obtained from geometrical methods. Through a Smarr-type mass formula as a function of the black hole charge and entropy the black hole temperature and electric potential, as the intensive parameters conjugate to the black hole entropy and charge, have been calculated.

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Correspondence to J. Pakravan.

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Pakravan, J., Takook, M.V. Thermodynamics of 4-dimensional charged black holes in Brans-Dicke-Born-Infeld gravity theory. Astrophys Space Sci 363, 181 (2018). https://doi.org/10.1007/s10509-018-3404-0

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  • DOI: https://doi.org/10.1007/s10509-018-3404-0

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