Analytical study on holographic superconductors with backreactions
  We employ the variational method for the Sturm-Liouville eigenvalue problem to analytically investigate the properties of the holographic superconductors. We find that the analytic method is still powerful when the backreaction is turned on. Reducing step size in the iterative procedure, we observe that the consistency of results between the analytic and numerical computations can be further improved. The obtained analytic result can be used to back up the numerical computations in the holographic superconductor in the fully backreacted spacetime. 
Qiyuan Pan, Jiliang Jing, Bin Wang and Songbai Chen
hep-th gr-qc