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arXiv 0903.1864hep-thcond-mat.supr-conhep-phnucl-th
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规范/引力对偶的味超导电性

Flavor Superconductivity from Gauge/Gravity Duality

Martin Ammon, Johanna Erdmenger, Matthias Kaminski, Patrick Kerner

摘要:

本文对我们最近提出的全息味超导模型作了详细的介绍和推广。该模型具有一个明确的场论实现为强耦合N=2的超级杨-米尔斯理论与基本物质在有限的温度和有限的同位旋化学势。利用规范/引力对偶,即在AdS黑洞背景下对两个味D 7-膜的探测,我们证明了该系统经历了临界指数为1/2的二级相变.新的基态可以解释为ρ介子超流。它显示了超导性的特征,例如无限的直流电导率和频率依赖电导率中的间隙。我们提出了一个弦的凝聚机制的重组字符串的图片。我们给出了一个详细的帐户的非阿贝尔的Dirac Born Infeld行动涉及使用两种不同的方法的评价。最后,我们还考虑了大量口味的情况下,并讨论了全息迈斯纳-奥克森菲尔德效应在我们的情况下。

英文摘要:

We give a detailed account and extensions of a holographic flavor superconductivity model which we have proposed recently. The model has an explicit field theory realization as strongly coupled N=2 Super Yang-Mills theory with fundamental matter at finite temperature and finite isospin chemical potential. Using gauge/gravity duality, i.e. a probe of two flavor D7-branes in the AdS black hole background, we show that the system undergoes a second order phase transition with critical exponent 1/2. The new ground state may be interpreted as a rho meson superfluid. It shows signatures known from superconductivity, such as an infinite dc conductivity and a gap in the frequency-dependent conductivity. We present a stringy picture of the condensation mechanism in terms of a recombination of strings. We give a detailed account of the evaluation of the non-Abelian Dirac-Born-Infeld action involved using two different methods. Finally we also consider the case of massive flavors and discuss the holographic Meissner-Ochsenfeld effect in our scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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