Holographic complexity in gauge/string superconductors

Following a methodology similar to [1], we derive a holographic complexity for two dimensional holographic superconductors (gauge/string superconductors) with backreactions. Applying a perturbation method proposed by Kanno in Ref. [2], we study behaviors of the complexity for a dual quantum system near critical points. We show that when a system moves from the normal phase (T > T-c) to the superconductor phase (T < T-c), the holographic complexity will be divergent. (C) 2016 The Authors. Published by Elsevier B.V.