Spacelike strings and jet quenching from a Wilson loop
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.
Cite
@article{arxiv.hep-th/0612157,
title = {Spacelike strings and jet quenching from a Wilson loop},
author = {Philip C. Argyres and Mohammad Edalati and Justin F. Vazquez-Poritz},
journal= {arXiv preprint arXiv:hep-th/0612157},
year = {2010}
}
Comments
38 pages, 6 figures, statements corrected