Kofané Timoléon Crépin

arXiv2017

Thermodynamics and Phase transition from regular Bardeen black hole

In this paper, thermodynamics and phase transition are investigated for the regular Bardeen black hole. Considering the metric of the Bardeen spacetime, we derived the Unruh-Verlinde temperature. Using the first law of thermodynamics, we derived the expression of the specific heat and plot its behavior. It results that the magnetic monopole charge $β$ reduces the temperature and induces a thermodynamics phase transition in the spacetime. Moreover, when increasing $β$, the transition point moves to higher entropy.

gr-qc↗

arXiv2016

Quasinormal modes of a quantum-corrected Schwarzschild black hole: gravitational and Dirac perturbations

In this work, quasinormal modes (QNMs) of the Schwarzschild black hole are investigated by taking into account the quantum fluctuations. Gravitational and Dirac perturbations were considered for this case. The Regge-Wheeler gauge and the Dirac equation were used to derive the perturbation equations of the gravitational and Dirac fields respectively and the third order Wentzel-Kramers-Brillouin (WKB) approximation method is used for the computing of the quasinormal frequencies. The results show that due to the quantum fluctuations in the background of the Schwarzschild black hole, the QNMs of the black hole damp more slowly when increasing the quantum correction factor (a), and oscillate more slowly.

gr-qc↗