Supergravity and the jet quenching parameter in the presence of R-charge densities

Details Supergravity and the jet quenching parameter in the presence of R-charge densities Supergravity and the jet quenching parameter in the presence of R-charge densities

2006-06-20

arxiv.org/abs/hep-th/0606190v3

JHEP 0701:065,2007

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, 2 figures; v3: clarifying comments added, references added, version to appear in JHEP

Scientific paper

10.1088/1126-6708/2007/01/065

Following a recent proposal, we employ the AdS/CFT correspondence to compute the jet quenching parameter for N=4 Yang-Mills theory at nonzero R-charge densities. Using as dual supergravity backgrounds non-extremal rotating branes, we find that the presence of the R-charges generically enhances the jet quenching phenomenon. However, at fixed temperature, this enhancement might or might not be a monotonically increasing function of the R-charge density and depends on the number of independent angular momenta describing the solution. We perform our analysis for the canonical as well as for the grand canonical ensemble which give qualitatively similar results.

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