Kovtun Pavel, Starinets Andrei
KITP, University of California, Santa Barbara, California 93106, USA.
Phys Rev Lett. 2006 Apr 7;96(13):131601. doi: 10.1103/PhysRevLett.96.131601. Epub 2006 Apr 6.
We use the gauge-gravity duality conjecture to compute spectral functions of the stress-energy tensor in finite-temperature N = 4 supersymmetric Yang-Mills theory in the limit of large N(c) and large 't Hooft coupling. The spectral functions exhibit peaks characteristic of hydrodynamic modes at small frequency, and oscillations at intermediate frequency. The nonperturbative spectral functions differ qualitatively from those obtained in perturbation theory. The results may prove useful for lattice studies of transport processes in thermal gauge theories.
我们利用规范-引力对偶猜想，在大N(c)和大't Hooft耦合的极限下，计算有限温度N = 4超对称杨-米尔斯理论中应力-能量张量的谱函数。谱函数在小频率处呈现出流体动力学模式的特征峰，在中频处呈现出振荡。非微扰谱函数在性质上与微扰理论中得到的谱函数不同。这些结果可能对热规范理论中输运过程的晶格研究有用。
