Conference Papers
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Item Thermodynamic Geometry of Regular Black Hole Surrounded by Quintessence(Springer Science and Business Media Deutschland GmbH, 2021) Ahmed Rizwan, C.L.; Naveena Kumara, A.; Vaid, D.We investigate thermodynamics of regular Bardeen AdS black hole surrounded by quintessence. Pressure-Volume (P-V) and temperature-entropy (T-S) plots are obtained from the first law of black hole thermodynamics, shows a critical behaviour. This is reflected in the divergence of specific heat against entropy plots. Using the thermodynamic geometry, we have tried to affirm this critical property. From the Ruppeiner and Weinhold geometries, we have calculated the thermodynamic curvature scalar RR and RW in the quintessence dark energy regime. It is found that in our case these thermodynamic scalars can only identify the critical behaviour and fail to show divergence at the phase transition points observed in specific heat study. © 2021, Springer Nature Singapore Pte Ltd.Item The Role of Global Monopole in Joule–Thomson Effect of AdS Black Hole(Springer Science and Business Media Deutschland GmbH, 2021) Naveena Kumara, A.; Ahmed Rizwan, C.L.; Ajith, K.M.We study the throttling process of the AdS black hole with a global monopole in the extended phase space. In the approach followed, the cosmological constant and the black hole mass are identified with the thermodynamic pressure and enthalpy, respectively. We investigate the dependency of the inversion temperature and isenthalpic curves on the global monopole parameter η. Our study shows a close resemblance between the phase transition of the black hole in the extended phase space and Van der Waals fluid. The presence of global monopole plays an important role in the throttling process. © 2021, Springer Nature Singapore Pte Ltd.