Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-21
Eur.Phys.J. A29 (2006) 71-75
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, invited talk at Workshop on Quark Gluon Plasma Thermalization, Vienna, August 10th-12th, 2005
Scientific paper
10.1140/epja/i2005-10304-y
Based on hep-ph/0510121, we discuss further the numerical study of classical SU(2) 3+1-D Yang-Mills equations for matter produced in a high energy heavy ion collision. The growth of the amplitude of fluctuations as $\exp{(\Gamma \sqrt{g^2\mu \tau})}$ (where $g^2\mu$ is a scale arising from the saturation of gluons in the nuclear wavefunction) is shown to be robust over a wide range of initial amplitudes that violate boost invariance. We argue that this growth is due to a non-Abelian Weibel instability, the scale of which is set by a dynamically generated plasmon mass. We find good agreement when we relate $\Gamma$ to the prediction from kinetic theory.
Romatschke Paul
Venugopalan Raju
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