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arxiv: hep-th/0611155 · v3 · pith:BTQZ5SBNnew · submitted 2006-11-15 · ✦ hep-th

Energy Loss of Gluons, Baryons and k-Quarks in an N=4 SYM Plasma

classification ✦ hep-th
keywords forcelargeenergyexperiencefoundheavylossplasma
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We consider different types of external color sources that move through a strongly-coupled thermal N=4 super-Yang-Mills plasma, and calculate, via the AdS/CFT correspondence, the dissipative force (or equivalently, the rate of energy loss) they experience. A bound state of k quarks in the totally antisymmetric representation is found to feel a force with a nontrivial k-dependence. Our result for k=1 (or k=N-1) agrees at large N with the one obtained recently by Herzog et al. and Gubser, but contains in addition an infinite series of 1/N corrections. The baryon (k=N) is seen to experience no drag. Finally, a heavy gluon is found to be subject to a force which at large N is twice as large as the one experienced by a heavy quark, in accordance with gauge theory expectations.

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