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arXiv · 0801.4594

Lightlike Wilson loops from AdS/CFT

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

We investigate the lightlike limit of stationary spacelike string configurations on a large class of five-dimensional asymptotically AdS backgrounds. Specific examples include gravity duals which incorporate finite 't Hooft coupling, curvature-squared corrections, and chemical potentials. A universal feature of these AdS/CFT models is that the string solution with minimum action yields a lightlike Wilson loop whose leading behavior is exponentially linear, rather than quadratic, in the width of the loop. Unless there is a compelling reason for discarding the leading saddlepoint contribution to the Wilson loop, following the proposal of Liu et. al. [2] leads to zero jet-quenching parameter for all of these models.

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Philip C. Argyres, Mohammad Edalati, Justin F. Vazquez-Poritz. 2008-01-30. Lightlike Wilson loops from AdS/CFT. https://doi.org/10.1088/1126-6708%2F2008%2F03%2F071

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