Density, short-range order and the quark-gluon plasma
High Energy Physics - Lattice
2009-11-13 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We study the thermal part of the energy density spatial correlator in the quark-gluon plasma. We describe its qualitative form at high temperatures. We then calculate it out to distances approx. 1.5/T in SU(3) gauge theory lattice simulations for the range of temperatures 0.9<= T/T_c<= 2.2. The vacuum-subtracted correlator exhibits non-monotonic behavior, and is almost conformal by 2T_c. Its broad maximum at r approx. 0.6/T suggests a dense medium with only weak short-range order, similar to a non-relativistic fluid near the liquid-gas phase transition, where eta/s is minimal.
Cite
@article{arxiv.0808.1950,
title = {Density, short-range order and the quark-gluon plasma},
author = {Harvey B. Meyer},
journal= {arXiv preprint arXiv:0808.1950},
year = {2009}
}
Comments
4 pages, 4 figures