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arXiv 1208.4102hep-thcond-mat.str-elgr-qc
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黑洞超辐射温度电阻率的普适线性

Universal linear in temperature resistivity from black hole superradiance

Aristomenis Donos, Sean A. Hartnoll

摘要:

对许多非常规材料家族的观察激发了对产生线性温度直流电阻率的鲁棒机制的研究。BKT量子相变在有限密度物质的全息描述中是常见的,分离临界相和有序相。我们表明,在全息BKT临界点,如果不稳定的运营商耦合到电流通过不相关的运营商,然后线性贡献的电阻率普遍获得。我们还获得了广泛的幂律尾的光学电导率,从德鲁德峰以及带间能量尺度的频谱权重的移动。我们给出了一个部分实现这种情况下使用爱因斯坦-麦克斯韦赝标量体理论。不稳定性是一个矢量模式在非零波矢,这是沟通的均匀电流通过无关耦合到离子晶格。

英文摘要:

Observations across many families of unconventional materials motivative the search for robust mechanisms producing linear in temperature d.c. resistivity. BKT quantum phase transitions are commonplace in holographic descriptions of finite density matter, separating critical and ordered phases. We show that at a holographic BKT critical point, if the unstable operator is coupled to the current via irrelevant operators, then a linear contribution to the resistivity is universally obtained. We also obtain broad power law tails in the optical conductivity, that shift spectral weight from the Drude peak as well as interband energy scales. We give a partial realization of this scenario using an Einstein-Maxwell-pseudoscalar bulk theory. The instability is a vectorial mode at nonzero wavevector, which is communicated to the homogeneous current via irrelevant coupling to an ionic lattice.

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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