Refined thermodynamic analysis of perfect fluid dark matter black holes in a phantom background
Kumar J. Upadhyay S. Sudhanshu H.K. Myrzakulov Y. Myrzakulov K.
10 September 2025World Scientific
International Journal of Modern Physics A
2025#40Issue 25
In this study, we examine the thermodynamics of black holes immersed in perfect fluid dark matter (PFDM) by employing the Misner-Sharp energy framework. We extend the analysis to include the thermal fluctuations of these black holes when size reduces to small size, redefining key thermodynamic variables such as pressure, volume, temperature, internal energy, and entropy within the context of PFDM. Using these newly defined variables, we systematically calculate the enthalpy, Gibbs free energy, and specific heat of PFDM black holes, incorporating perturbative thermal corrections. To assess the stability of these black holes, we perform a detailed graphical analysis of the specific heat as a function of the horizon radius, providing insights into the thermal stability of PFDM black holes. This comprehensive approach enhances our understanding of the thermodynamic properties and stability of black holes in the presence of dark matter.
Black hole thermodynamics , dark matter , Phantom field
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P.G. Department of Physics, Magadh University, Bihar, Bodhgaya, 824234, India
Department of Physics, K.L.S. College, Magadh University, Bihar, Nawada, 805110, India
School of Physics, Damghan University, P.O. Box 3671641167, Damghan, Iran
Department of Physics, J. J. College, Magadh University, Bihar, Gaya, 823003, India
Department of General and Theoretical Physics, L. N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
P.G. Department of Physics
Department of Physics
School of Physics
Department of Physics
Department of General and Theoretical Physics
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