论文标题
二聚态黑洞和磁性烟动力学的准正常模式
Quasi-normal modes of dyonic black holes and magneto-hydrodynamics
论文作者
论文摘要
我们在（2+1）尺寸中重新审视磁性流动力学，并确认它与（3+1）尺寸二元型号黑孔的准正常模式一致，该模式在有限密度，磁场和波动矢量的最通用设置中。我们研究所有可能的模式（声音，剪切，扩散，回旋子等）及其相互作用。对于磁流动力学，我们执行完整而详细的分析，校正文献中的某些预成分，这对于与准正常模式的比较非常重要。对于全息图中的准正常模式计算，我们确定了二射黑孔的独立波动变量，该变量在有限的密度和磁场下是不繁琐的。作为二射黑洞的准正常模式的应用，我们研究了传输特性，即扩散常数。我们发现，有限密度和磁场下的扩散常数在低温下饱和下限。我们表明，可以从钉子的刀具上理解这种界限。
We revisit the magneto-hydrodynamics in (2+1) dimensions and confirm that it is consistent with the quasi-normal modes of the (3+1) dimensional dyonic black holes in the most general set-up with finite density, magnetic field and wave vector. We investigate all possible modes (sound, shear, diffusion, cyclotron etc.) and their interplay. For the magneto-hydrodynamics we perform a complete and detailed analysis correcting some prefactors in the literature, which is important for the comparison with quasi-normal modes. For the quasi-normal mode computations in holography we identify the independent fluctuation variables of the dyonic black holes, which is nontrivial at finite density and magnetic field. As an application of the quasi-normal modes of the dyonic black holes we investigate a transport property, the diffusion constant. We find that the diffusion constant at finite density and magnetic field saturates the lower bound at low temperature. We show that this bound can be understood from the pole-skipping point.
