Jan 26 – 30, 2015
Bormio, Italy
Europe/Berlin timezone

Shear viscosity $\eta$ to electric conductivity $\sigma_{el}$ ratio for the Quark-Gluon Plasma

Jan 26, 2015, 5:27 PM
Bormio, Italy

Bormio, Italy


Mr Armando Puglisi


Transport coefficients of strongly interacting matter are currently subject of intense studies due to their relevance for the characterization of the quark-gluon plasma (QGP) produced in ultra-relativistic heavy-ion collisions (uRHIC). We discuss the connection between the shear viscosity to entropy density ratio, $\eta/s$, and the electric conductivity, $\sigma_{el}$: we find that a minimal eta/s is consistent with a low value of electric conductivity as measured in recent lattice QCD calculations. More generally we show that the ratio of $\eta/s$ over $\sigma_{el}/T$ supplies a measure of the quark to gluon scattering rates whose knowledge would allow to significantly advance in the understanding of the QGP phase.

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