The phase transition of corrected black hole with f(R) gravity

Document Type : Research Paper

Authors

1 Department of Physics‎, ‎North Tehran Branch‎, ‎Islamic Azad University‎, ‎Tehran‎, ‎Iran.

2 Department of Physics, University of Mazandaran

3 Department of Physics, North Tehran Branch, Islamic Azad University, Tehran, Iran.

4 Department of Physics, Alzahra University, Tehran, Iran.

Abstract

In this letter, we consider static black hole in f(R) gravity.
We take advantage from corrected entropy and temperature and investigate such black hole. Finally, we study the $ P - V $ critically and phase transition of corrected black hole with respect to entropy and temperature. Here also, we obtain the heat capacity for the static black hole in $ f(R) $ gravity. This calculation help us to investigate some singularity.
We have shown that the corrections exist for any black hole, but they are important for a small black holes and negligible for the large black holes. The advantage of a static black hole in $ f(R) $ gravity is its holographic picture, which is a van der Waals fluid. Then, We have shown that in the presence of corrections there is still a van der Waals fluid as a dual picture.
The critical values of event horizon radius for phase transitions are shown due to the corrections of entropy and temperature.
We have some figures which show the phase transition and $ P - V $ critically.

Keywords

References

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Iranian Journal of Astronomy and Astrophysics
Volume 6, Issue 1
April 2019
Pages 1-8

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