Spectral sum rules for the quark-gluon plasma
High Energy Physics - Phenomenology
2009-11-06 v1 High Energy Physics - Theory
Nuclear Theory
Abstract
We derive sum rules involving the spectral density of the stress-energy tensor in N=4 super-Yang-Mills theory and pure Yang-Mills theory. The sum rules come from the hydrodynamic behavior at small momenta and the conformal (in the case of N=4 SYM theory) or asymptotically free (as for the pure Yang-Mills theory) behavior at large momenta. These sum rules may help constrain QGP transport coefficients obtained from lattice QCD.
Cite
@article{arxiv.0903.3946,
title = {Spectral sum rules for the quark-gluon plasma},
author = {Paul Romatschke and Dam Thanh Son},
journal= {arXiv preprint arXiv:0903.3946},
year = {2009}
}
Comments
21 pages, 3 figures