Superconductivity, superfluidity and holography

6th International Workshop DICE2012 Spacetime – Matter – Quantum Mechanics: From the Planck Scale to Emergent Phenomena

物理学;力学

Salvio, Alberto^1,2

Scuola Normale Superiore, INFN, Piazza dei Cavalieri 7, 56126 Pisa, Italy^1

Departamento de Física Teórica, Universidad Autónoma de Madrid, Instituto de Física Teórica IFT-UAM/CSIC, Cantoblanco, Madrid 28049, Spain^2

关键词: Axial magnetic field;    Extra dimensions;    High-temperature superconductivity;    Holographic model;    Holographic superconductors;    Non-local effect;    Technical details;    Universal properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/442/1/012040/pdf
DOI  :  10.1088/1742-6596/442/1/012040

学科分类：力学，机械学

来源: IOP

【 摘 要 】

This is a concise review of holographic superconductors and superfluids. We highlight some predictions of the holographic models and the emphasis is given to physical aspects rather than to the technical details, although some references to understand the latter are systematically provided. We include gapped systems in the discussion, motivated by the physics of high-temperature superconductivity. In order to do so we consider a compactified extra dimension (with radius R), or, alternatively, a dilatonic field. The first setup can also be used to model cylindrical superconductors; when these are probed by an axial magnetic field a universal property of holography emerges: while for large R (compared to the other scales in the problem) non-local operators are suppressed, leading to the so called Little-Parks periodicity, the opposite limit shows non-local effects, e.g. the uplifting of the Little-Parks periodicity. This difference corresponds in the gravity side to a Hawking-Page phase transition.