Shear viscosity and spectral function of the quark matter
classification
✦ hep-ph
keywords
viscosityfunctionshearspectralquarkdiscussmatterapproximated
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We discuss the shear viscosity of the quark matter by using the Kubo-Mori formula. It is found that the shear viscosity is expressed in terms of the quark spectral function. If the spectral function is approximated by a modified Bright-Wigner type, the viscosity decreases as the width of the spectral function increases. We also discuss dependence of the shear viscosity on the temperature and the density.
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