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arXiv 0908.1470hep-th
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世界片视界上下的随机弦运动

Stochastic String Motion Above and Below the World Sheet Horizon

Jorge Casalderrey-Solana, Keun-Young Kim, Derek Teaney

摘要:

研究了相对论性尾弦在黑洞AdS_5中的随机运动。经典弦解发展了一个世界片视界,我们确定了相关的霍金辐射谱。发射出的辐射在弦上引起了世界片视界之上和之下的波动。与标准的黑洞物理相反,视界以下的涨落与AdS的边界有因果关系。我们导出了对偶弦的体随机运动方程,并利用AdS/CFT对应确定了强耦合$\N=4$等离子体中快重夸克的演化。我们发现夸克的动力学质量减少了$ΔM=-\sqrt{γλ}T/2$,而世界片涨落的关联时间增加了$\sqrtγ$。

英文摘要:

We study the stochastic motion of a relativistic trailing string in black hole AdS_5. The classical string solution develops a world-sheet horizon and we determine the associated Hawking radiation spectrum. The emitted radiation causes fluctuations on the string both above and below the world-sheet horizon. In contrast to standard black hole physics, the fluctuations below the horizon are causally connected with the boundary of AdS. We derive a bulk stochastic equation of motion for the dual string and use the AdS/CFT correspondence to determine the evolution a fast heavy quark in the strongly coupled $\N=4$ plasma. We find that the kinetic mass of the quark decreases by $ΔM=-\sqrt{γλ}T/2$ while the correlation time of world sheet fluctuations increases by $\sqrtγ$.

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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