Quasinormal modes and phase structure of regular AdS Einstein–Gauss–Bonnet black holes
Myrzakulov Y. Myrzakulov K. Upadhyay S. Singh D.V.
1 June 2023World Scientific
International Journal of Geometric Methods in Modern Physics
2023#20Issue 7
In this paper, we present an exact regular black hole solution in Einstein–Gauss–Bonnet coupled with nonlinear matter fields. It is a generalization of a regular Einstein–Gauss–Bonnet black hole in 5D AdS spacetime. The causal structure of the obtained solution identifies with Boulware–Deser black hole solution, except for the curvature singularity at the center. It incorporates the Boulware–Deser black holes in the absence of deviation parameters. We also study the thermodynamic properties of the solution that satisfies a modified first law of thermodynamics. Furthermore, we discuss the stability of the obtained black hole solution and, in this regard, a double phase transition occurs. Within this context, we find that phase transition exists at the point where the heat capacity diverges and, incidentally, the temperature attains the maximum value. We discuss the fluid nature of the black hole also exhibiting critical points. The quasinormal modes of the black hole solution and their dependencies on Gauss–Bonnet coupling and deviation parameters are also analyzed in terms of null geodesics.
5D EGB black hole , phase transition , Quasinormal modes
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Department of General & Theoretical Physics L. N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Astana, 010009, Kazakhstan
Department of Physics, K. L. S. College Magadh University, Nawada, 805110, India
School of Physics, Damghan University, P.O. Box 3671641167, Damghan, Iran
Department of Physics, Institute of Applied Sciences, Humanities GLA University, Uttar Pradesh, Mathura, 281406, India
Department of General & Theoretical Physics L. N. Gumilyov Eurasian National University
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics
Department of Physics
School of Physics
Department of Physics
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