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arXiv 1407.0104hep-th
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从全息图上精确计算费米子格林函数

Exact fermionic Green's functions from holograpny

Zhong-Ying Fan

摘要:

利用Einstein-Maxwell-Dilaton理论,构造了一系列在零温度极限下熵为零的带电双光子黑洞.在这些黑洞中,无质量费米子的波函数和格林函数可以用$(ω,k)$相空间中的特殊函数精确求解。我们观察到,对于足够大的电荷,有许多极点的格林函数消失$ω$,这强烈表明费米面存在于这些全息系统。详细地说明了这些体系中格林函数的新的区别性质。我们还研究了格林函数在任意频率下的极点运动。我们的分析结果提供了一个更现实和优雅的方法来研究强关联费米子系统使用规范/引力对偶。

英文摘要:

We construct a series of charged dilatonic black holes which share zero entropy in the zero temperature limit using Einstein-Maxwell-Dilaton theories. In these black holes, the wave functions and the Green's functions of massless fermions can be solved exactly in terms of special functions in the phase space of $(ω,k)$. We observe that for sufficiently large charge, there are many poles in the Green's function with vanishing $ω$, which strongly signifies that Fermi surfaces exist in these holographic systems. The new distinguishing properties of the Green's function arising in these systems were illustrated with great details. We also study the poles motion of the Green's function for arbitrary (complex) frequency. Our analytic results provide a more realistic and elegant approach to study strongly correlated fermionic systems using gauge/gravity duality.

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