2021/11/06 by Chen, Yiqian, Guo, Xiaobo, Wang, Peng
#FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.2111.03810
In this paper, we investigate holographic superconductors dual to asymptotically anti-de Sitter black holes in an Einstein-Maxwell-scalar model with a non-minimal coupling between the scalar and Maxwell fields. In the probe limit, it shows that the scalar condensate occurs below the critical temperature Tc, and decreases with the increase of the coupling constant α. On the other hand, the the critical temperature Tc increases as the coupling constant α grows. We also calculate the optical conductivity of the holographic superconductor, and observe that a gap forms below Tc. Interestingly, the non-minimal coupling can lead to a spike occurring in the gap at a low temperature.