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arXiv · 2409.18323

The dual Ginzburg-Landau theory for a holographic superconductor: Finite coupling corrections

Makoto Natsuume
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Abstract

The holographic superconductor is the holographic dual of superconductors. We recently identified the dual Ginzburg-Landau (GL) theory for a class of bulk 5-dimensional holographic superconductors (arXiv:2207.07182 [hep-th]). However, the result is the strong coupling limit or the large-$N_c$ limit. A natural question is how the dual GL theory changes at finite coupling. We identify the dual GL theory for a minimal holographic superconductor at finite coupling (Gauss-Bonnet holographic superconductor), where numerical coefficients are obtained exactly. The GL parameter $\kappa$ increases at finite coupling, namely the system approaches a more Type-II superconductor like material. We also point out two potential problems in previous works: (1) the "naive" AdS/CFT dictionary, and (2) the condensate determined only from the GL potential terms. As a result, the condensate increases at finite coupling unlike common folklore.

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Makoto Natsuume. 2024-09-26. The dual Ginzburg-Landau theory for a holographic superconductor: Finite coupling corrections. https://arxiv.org/abs/2409.18323

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