A general holographic insulator/superconductor model with dark matter sector away from the probe limit

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• 作者：Yan Peng^a ; ^b ; ^{yanpengphy@163.com} ; Qiyuan Pan^c ; ^{panqiyuan@126.com} ; Yunqi Liu^d ; ^{liuyunqi@hust.edu.cn}
• 刊名：Nuclear Physics B
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：915
• 期：Complete
• 页码：69-83
• 全文大小：373 K
• 卷排序：915

文摘

We investigate holographic phase transitions with dark matter sector in the AdS soliton background away from the probe limit. In cases of weak backreaction, we find that the larger coupling parameter α makes the gap of condensation shallower and the critical chemical potential keeps as a constant. In contrast, for very heavy backreaction, the dark matter sector could affect the critical chemical potential and the order of phase transitions. We also find the jump of the holographic topological entanglement entropy corresponds to a first order transition between superconducting states in this model with dark matter sector. More importantly, for certain sets of parameters, we observe novel phenomenon of retrograde condensation. In a word, the dark matter sector provides richer physics in the phase structure and the holographic superconductor properties are helpful in understanding dark matter.