Higher derivatives driven symmetry breaking in holographic superconductors

Autor:	Hai-Li Li, Guoyang Fu, Yan Liu, Jian-Pin Wu, Xin Zhang
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Zdroj:	European Physical Journal C: Particles and Fields, Vol 80, Iss 2, Pp 1-12 (2020)
Druh dokumentu:	article
ISSN:	1434-6044 1434-6052
DOI:	10.1140/epjc/s10052-020-7670-y
Popis:	Abstract In this paper, we construct a novel holographic superconductor from higher derivative (HD) gravity involving a coupling between the complex scalar field and the Weyl tensor. This HD coupling term provides a near horizon effective mass squared, which can violates IR Breitenlohner–Freedman (BF) bound by tuning the HD coupling and induces the instability of black brane such that the superconducting phase transition happens. We also study the properties of the condensation and the conductivity in the probe limit. We find that a wider extension of the superconducting energy gap ranging from 4.6 to 10.5 may provide a novel platform to model and interpret the phenomena in the real materials of high temperature superconductor.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/4557ccab92da4ea78ef9e082b4e40be0 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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