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arXiv 1601.04732hep-th
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指数电动力学下Lifshitz黑洞的热力学和规范/引力对偶

Thermodynamics and gauge/gravity duality for Lifshitz black holes in the presence of exponential electrodynamics

M. Kord Zangeneh, A. Dehyadegari, A. Sheykhi, M. H. Dehghani

摘要:

本文在非线性指数电动力学的存在下,构造了一类新的拓扑黑洞Lifshitz解.我们表明,现实的Lifshitz支持麦克斯韦物质场排除负视界曲率的解决方案,除了渐近AdS的情况下。通过对守恒量和耗散量的计算,得到了一个Smarr型质量公式,证实了在黑洞视界上满足热力学第一定律。然后,我们研究了解的热稳定性,并计算了在热扰动下不同参数对解的稳定性的影响。接下来,我们应用规范/引力对偶性,通过极点方法计算三维流体动力学系统的剪切粘性与熵之比。此外,我们还研究了二维系统如石墨烯的全息电导率的行为。我们分别考虑线性麦克斯韦和非线性指数电动力学,揭示了非线性对全息电导率的影响。我们指出,全息电导率为零的$z>3$在非线性电动力学的情况下,而不是在线性麦克斯韦的情况下。最后,我们数值求解微扰附加场方程,并绘制渐近AdS和Lifshitz情况下电导率实部和虚部的行为。我们目前的实验结果与我们的数值计算相匹配。

英文摘要:

In this paper, we construct a new class of topological black hole Lifshitz solutions in the presence of nonlinear exponential electrodynamics for Einstein-dilaton gravity. We show that the reality of Lifshitz supporting Maxwell matter fields exclude the negative horizon curvature solutions except for the asymptotic AdS case. Calculating the conserved and thermodynamical quantities, we obtain a Smarr type formula for the mass and confirm that thermodynamics first law is satisfied on the black hole horizon. Afterward, we study the thermal stability of our solutions and figure out the effects of different parameters on the stability of solutions under thermal perturbations. Next, we apply the gauge/gravity duality in order to calculate the ratio of shear viscosity to entropy for a three-dimensional hydrodynamic system by using the pole method. Furthermore, we study the behavior of holographic conductivity for two-dimensional systems such as graphene. We consider linear Maxwell and nonlinear exponential electrodynamics separately and disclose the effect of nonlinearity on holographic conductivity. We indicate that holographic conductivity vanishes for $z>3$ in the case of nonlinear electrodynamics while it does not in the linear Maxwell case. Finally, we solve perturbative additional field equations numerically and plot the behaviors of real and imaginary parts of conductivity for asymptotic AdS and Lifshitz cases. We present experimental results match with our numerical ones.

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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