Quark spectral density and a strongly-coupled QGP
Nuclear Theory
2011-08-08 v1 High Energy Physics - Lattice
High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
The maximum entropy method is used to compute the dressed-quark spectral density from the self-consistent numerical solution of a rainbow truncation of QCD's gap equation at temperatures above that for which chiral symmetry is restored. In addition to the normal and plasmino modes, the spectral function also exhibits an essentially nonperturbative zero mode for temperatures extending to 1.4-1.8-times the critical temperature, T_c. In the neighbourhood of T_c, this long-wavelength mode contains the bulk of the spectral strength and so long as this mode persists, the system may fairly be described as a strongly-coupled state of matter.
Cite
@article{arxiv.1010.4231,
title = {Quark spectral density and a strongly-coupled QGP},
author = {Si-xue Qin and Lei Chang and Yu-xin Liu and Craig D. Roberts},
journal= {arXiv preprint arXiv:1010.4231},
year = {2011}
}
Comments
4 pages, 2 figures