The phase transition of nonminimal Yang–Mills AdS black brane

In this paper, we shall study the phase transition of nonminimal coupling of Einstein–Hilbert gravity and electric field of Yang–Mills type in AdS space–time. We couple the Ricci scalar to the Yang–Mills invariant to obtain a modified theory of gravity. A black brane solution is introduced up to the first order of the term $R{F}_{\mu \alpha }^{(a)}{F}^{(a)\mu \alpha }$ in this model. Then, the phase transition of this solution will be investigated in canonical ensemble. Our investigation shows that only the second-order phase transition behavior is seen in this model. Also, due to the coupling of the Yang–Mills field and Ricci scalar, there are differences with the phase transitions of the usual minimal models. We shall show that in the absence of nonminimal coupling there is not any phase transition.