Electrical conductivity of quark matter at finite T
Abstract
In this talk, I present the recent theoretical results on the electrical conductivity (EC) sigma of quark matter, using the Kubo formula at finite temperature and zero quark density (T>0, mu=0) in the presence of an external strong magnetic field. The dilute instanton-liquid model with the caloron distribution is taken into account. It turns out that sigma=(0.02~0.15)/fm for T=(0~400) MeV with the relaxation time tau=(0.3~0.9) fm. EC is parameterized as sigma/T (0.46,0.77,1.08,1.39)C_EM for tau=(0.3,0.5,0.7,0.9) fm, respectively. These results are well compatible with other theoretical estimations and show almost negligible effects from the magnetic field. The soft photon emission rate from the quark-gluon plasma is discussed as well.
Keywords
Cite
@article{arxiv.1210.7921,
title = {Electrical conductivity of quark matter at finite T},
author = {Seung-il Nam},
journal= {arXiv preprint arXiv:1210.7921},
year = {2012}
}
Comments
5 pages, 2 figures, Talk given at the International Conference "Xth Quark Confinement and the Hadron Spectrum" (Confinement 10), 8~12 October 2012, TUM Campus Garching, Munich, Germany