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

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

2006-11-15

arxiv.org/abs/hep-th/0611155v3

JHEP 0702:084,2007

Physics

High Energy Physics

High Energy Physics - Theory

Latex 2e, 24 pages, 1 eps figure; v2: slightly amplified discussion on the relation between the drag force and the tension of

Scientific paper

10.1088/1126-6708/2007/02/084

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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