Numerical study of the properties of a holographic superconductor from an anti-de Sitter-Einstein-Born-Infeld black hole with backreaction

We study numerically an s-wave holographic superconductor from an anti-de Sitter-Einstein-Born-Infeld black hole with backreaction in the context of the AdS/CFT correspondence. By introducing a parameter G to tune the effects of the backreaction, we can study non-perturbatively how the condensation properties and conductivity of the superconductor change as the backreaction increases. We find that for small values of G, increasing the nonlinearity of the Born-Infeld model makes the formation of the condensate harder -- consistent with previous results reported in the literature -- while for values of G close to one, the opposite effect occurs; increasing the nonlinearity slightly facilitates its formation. We also determine how the ratio ωg/Tc varies for different intensities of nonlinearity and backreaction, showing in particular that large deviations from the so-called universal value arise as backreaction becomes stronger.