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arXiv 1003.5332hep-thgr-qchep-ph
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强耦合共形场论中的量子涨落和Unruh效应

Quantum Fluctuations and the Unruh Effect in Strongly-Coupled Conformal Field Theories

Elena Caceres, Mariano Chernicoff, Alberto Guijosa, Juan F. Pedraza

摘要:

通过AdS/CFT对应,我们研究了不同维强耦合共形场论真空中的均匀加速夸克,并确定了由此产生的夸克轨迹的随机涨落.从惯性观察者的角度来看,这些是由加速夸克发射的胶子辐射引起的量子涨落。从夸克本身的角度来看,它们起源于由Unruh效应预测的热介质。我们仔细检查这两个描述之间的关系在重力方面的对应关系,并特别表明,在转换的共形场论从林德勒空间到开放的爱因斯坦宇宙,加速视界消失的边界理论,但保存在散装。这种变换使我们能够将真空中辐射诱导涨落的计算与德波尔等人对热介质中平均静止的夸克的布朗运动的分析直接联系起来。结合这个相同的体积变换与以前的结果Emparan,我们也能够计算的应力-能量张量的Unruh热介质。

英文摘要:

Through the AdS/CFT correspondence, we study a uniformly accelerated quark in the vacuum of strongly-coupled conformal field theories in various dimensions, and determine the resulting stochastic fluctuations of the quark trajectory. From the perspective of an inertial observer, these are quantum fluctuations induced by the gluonic radiation emitted by the accelerated quark. From the point of view of the quark itself, they originate from the thermal medium predicted by the Unruh effect. We scrutinize the relation between these two descriptions in the gravity side of the correspondence, and show in particular that upon transforming the conformal field theory from Rindler space to the open Einstein universe, the acceleration horizon disappears from the boundary theory but is preserved in the bulk. This transformation allows us to directly connect our calculation of radiation-induced fluctuations in vacuum with the analysis by de Boer et al. of the Brownian motion of a quark that is on average static within a thermal medium. Combining this same bulk transformation with previous results of Emparan, we are also able to compute the stress-energy tensor of the Unruh thermal medium.

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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