Gauss-Bonnet holographic superconductors

被引:94
作者
Barclay, Luke [1 ]
Gregory, Ruth [1 ]
Kanno, Sugumi [1 ]
Sutcliffe, Paul [1 ]
机构
[1] Univ Durham, Dept Math Sci, Ctr Particle Theory, Durham DH1 3LE, England
关键词
Gauge-gravity correspondence; AdS-CFT Correspondence; STABILITY; GRAVITY;
D O I
10.1007/JHEP12(2010)029
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We study holographic superconductors in five dimensional Einstein-Gauss-Bonnet gravity both numerically and analytically. We find the critical temperature of the superconductor decreases as backreaction is increased, although the effect of the Gauss-Bonnet coupling is more subtle: the critical temperature first decreases then increases as the coupling tends towards the Chern-Simons value in a backreaction dependent fashion. We compute the conductivity of the system, finding the energy gap, and show that the effect of both backreaction and higher curvature is to increase the gap ratio omega(g)/T-c, thus there is no universal relation for these superconductors.
引用
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页数:18
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