Generalized extremal branes in AdS/CMT and holographic superconductors

Abstract

AdS${}_4$ generalized extremal branes are scrutinized in the context of AdS/CFT. Holographic superconductors are studied as dual objects to AdS${}_4$ generalized black branes, whose coefficients of response and transport in the dual condensed matter theory are calculated and discussed. The holographic Weyl anomaly is also addressed. The holographic superconductor bound current is shown to be enhanced by the parameter controlling the family of AdS${}_4$ generalized extremal brane solutions, when compared to the standard AdS${}_4$-Reissner-Nordström black brane results. In the probe limit, the electrical DC conductivity for holographic superconductors with AdS${}_4$ generalized extremal brane dual background is also reported.

33 pages, 9 figures

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