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arXiv 1004.4912hep-thhep-ph
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非阿贝尔强耦合规范理论中的辐射阻尼

Radiation Damping in a Non-Abelian Strongly-Coupled Gauge Theory

Mariano Chernicoff, J. Antonio Garcia, Alberto Guijosa

摘要:

利用AdS/CFT对应,研究了强耦合N=4超杨米尔斯(SYM)中的“缀饰”或“复合”夸克.我们表明,标准的弦动力学很好地捕捉到了夸克及其周围的量子非阿贝尔场配置的物理,使之有可能推导出一个相对论性的运动方程,其中包括辐射阻尼的影响。从这个方程可以推导出复合夸克的非标准色散关系,以及辐射率的洛伦兹协变公式。

英文摘要:

We study a `dressed' or `composite' quark in strongly-coupled N=4 super-Yang-Mills (SYM), making use of the AdS/CFT correspondence. We show that the standard string dynamics nicely captures the physics of the quark and its surrounding quantum non-Abelian field configuration, making it possible to derive a relativistic equation of motion that incorporates the effects of radiation damping. From this equation one can deduce a non-standard dispersion relation for the composite quark, as well as a Lorentz covariant formula for its rate of radiation.

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