Holographic superconductors at zero density
Jie Ren, Haodong Xie
DOI 10.1103/PhysRevD.107.106004 · Physical Review D
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Abstract
We construct holographic superconductors at zero density. The model enjoys a luxury property that the background geometry dual to the ground state is analytically available. It has a hyperscaling-violating geometry in the IR and is asymptotically anti–de Sitter in the UV. Classification by IR geometries gives new insights on supergravity solutions. We numerically construct the finite temperature solution of hairy black holes and verify the phase transition by tuning a double-trace deformation parameter. For a holographic superconductor from M theory, we obtain an analytic solution of the ac conductivity, which explicitly shows a superconducting delta function and a hard gap.
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