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arXiv 0903.2834hep-th
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具有化学势的全息流体力学

Holographic Hydrodynamics with a Chemical Potential

Robert C. Myers, Miguel F. Paulos, Aninda Sinha

摘要:

我们考虑耦合到负宇宙学常数和单个U(1)规范场的五维引力,包括一般的四阶导数相互作用。在这个框架下,我们构造带电平面AdS黑洞解微扰,并考虑在对偶CFT等离子体的热和流体动力学性质。特别是,我们计算的剪切粘度熵密度的比率,并认为,违反KSS约束的化学势的存在下,增强。我们还计算了电导率,并评论了与此系数有关的各种限制。

英文摘要:

We consider five-dimensional gravity coupled to a negative cosmological constant and a single U(1) gauge field, including a general set of four-derivative interactions. In this framework, we construct charged planar AdS black hole solutions perturbatively and consider the thermal and hydrodynamic properties of the plasma in the dual CFT. In particular, we calculate the ratio of shear viscosity to entropy density and argue that the violation of the KSS bound is enhanced in the presence of a chemical potential. We also compute the electrical conductivity and comment on various conjectured bounds related to this coefficient.

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