Beyond General Relativity, Beyond Cosmological Standard Model

Insight into the thermodynamic phase transition of RN-AdS black holes in massive gravity via Quasinormal modes and unstable circular photon orbits

Not scheduled

20m

Faculty of Physics, University of Warsaw

Poster session

Speaker

Mr Samir Iraoui (High Energy and Astrophysics Laboratory, Physics Department, FSSM, Cadi Ayyad University)

Description

We use the quasinormal modes of a massless scalar perturbation to probe the phase transition of the high dimension charged AdS black holes. As a result, the signature of the critical behavior of this black hole solution is detected [ 1 , 2 ]. As an alternative, we can use also the unstable circular photon orbits around a $RN-AdS_4$ BH in massive gravity to establish a direct link between the null geodesics and the critical behavior thermodynamic of such black hole solution. The analysis shows that the unstable circular radius $r_0$ and the minimal impact parameter $\xi_0$ corresponding to the unstable circular orbits are a good tool to reveal the thermodynamic phase structure [ 3 ].
1 https://arxiv.org/abs/1606.08524
2 https://arxiv.org/abs/1701.00872
3 https://arxiv.org/abs/1902.00557