Color Diffusion and Conductivity in a Quark-Gluon Plasma

Details Color Diffusion and Conductivity in a Quark-Gluon Plasma Color Diffusion and Conductivity in a Quark-Gluon Plasma

1993-07-07

arxiv.org/abs/nucl-th/9307007v1

Phys.Lett.B316:373-380,1993

Physics

Nuclear Physics

Nuclear Theory

11 pages, Columbia University Preprint CU-TP-598

Scientific paper

10.1016/0370-2693(93)90341-E

Color diffusion is shown to be an important dissipative property of quark-gluon plasmas that rapidly damps collective color modes. We derive the characteristic color relaxation time scale, $t_c\approx (3\alpha_s T \log(m_E/m_M ))^{-1}$, showing its sensitivity to the ratio of the static color electric and magnetic screening masses. This leads to a surprisingly small color conductivity, $\sigma_c\approx 2 T/\log(m_E/m_M)$, which in fact vanishes in the semi-classical (1-loop) limit.

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