Quantum Fluctuations and the Unruh effect in strongly-coupled conformal field theories

被引:53
作者
Caceres, Elena [1 ]
Chernicoff, Mariano [2 ,3 ]
Guijosa, Alberto [4 ]
Pedraza, Juan F. [4 ]
机构
[1] Univ Colima, Fac Ciencias, Colima 28045, Mexico
[2] Univ Nacl Autonoma Mexico, Dept Fis, Fac Ciencias, Mexico City 04510, DF, Mexico
[3] Univ Barcelona, Dept Fis Fonamental, E-08028 Barcelona, Spain
[4] Univ Nacl Autonoma Mexico, Dept Fis Altas Energias, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2010年 / 06期
基金
美国国家科学基金会;
关键词
AdS-CFT Correspondence; Gauge-gravity correspondence; D-branes; Quantum Dissipative Systems; STRESS TENSOR; RADIATION REACTION; BLACK-HOLE; TRACE ANOMALIES; RENORMALIZATION;
D O I
10.1007/JHEP06(2010)078
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
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.
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页数:30
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