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arXiv · hep-th/0612157

Spacelike strings and jet quenching from a Wilson loop

Philip C. Argyres·Mohammad Edalati·Justin F. Vazquez-Poritz
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Abstract

We investigate stationary string solutions with spacelike worldsheet in a five-dimensional AdS black hole background, and find that there are many branches of such solutions. Using a non-perturbative definition of the jet quenching parameter proposed by Liu et. al., hep-ph/0605178, we take the lightlike limit of these solutions to evaluate the jet quenching parameter in an N=4 super Yang-Mills thermal bath. We show that this proposed definition gives zero jet quenching parameter, independent of how the lightlike limit is taken. In particular, the minimum-action solution giving the dominant contribution to the Wilson loop has a leading behavior that is linear, rather than quadratic, in the quark separation.

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Philip C. Argyres, Mohammad Edalati, Justin F. Vazquez-Poritz. 2007-01-03. Spacelike strings and jet quenching from a Wilson loop. https://doi.org/10.1088/1126-6708%2F2007%2F04%2F049

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