Holographic p-wave superconductor with $$C^2F^2$$ C2F2 correction

• Main Authors: Jun-Wang Lu, Ya-Bo Wu, Bao-Ping Dong, Yu Zhang
• Format: Article
• Language: English
• Published: SpringerOpen 2020-02-01
• Series: European Physical Journal C: Particles and Fields
• Online Access: https://doi.org/10.1140/epjc/s10052-020-7645-z

Abstract Via numerical and analytical method, we construct the holographic p-wave conductor/superconductor model with $$C^2F^2$$ C2F2 correction (where $$C^2F^2=C_{\mu \nu }^{\alpha \beta }C_{ \alpha \beta }^{\mu \nu }F_{\rho \sigma }F^{\rho \sigma }$$ C2F2=CμναβCαβμνFρσFρσ , and $$C_{\mu \nu }^{\alpha \beta }$$ Cμναβ and $$F_{\rho \sigma }$$ Fρσ denotes the Weyl tensor and gauge field strength, respectively.)in the four-dimensional Schwarzschild-AdS black hole, and mainly study the effects of $$C^2F^2$$ C2F2 correction parameter denoted by $$\gamma $$ γ on the properties of superconductors. The results show that for all values of the $$C^2F^2$$ C2F2 parameter, there always exists a critical temperature below which the vector hair appears. Meanwhile, the critical temperature increases with the improving $$C^2F^2$$ C2F2 parameter $$\gamma $$ γ , which suggests that the improving $$C^2F^2$$ C2F2 parameter enhances the superconductor phase transition. Furthermore, at the critical temperature, the real part of conductivity reproduces respectively a Drude-like peak and an obviously pronounced peak for some value of nonvanishing $$C^2F^2$$ C2F2 parameter. At the low temperature, a clear energy gap can be observed at the intermediate frequency and the ratio of the energy gap to the critical temperature decreases with the increasing $$C^2F^2$$ C2F2 parameter, which is consistent with the effect of the $$C^2F^2$$ C2F2 parameter on the critical temperature. In addition, the analytical results agree well with the numerical results, which means that the analytical Sturm–Liouville method is still reliable in the grand canonical ensemble.