Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
Volume 17, Issue 3-4, Pages 673-678Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218271808012425
Keywords
black holes; heavy-ion collisions; gauge-string duality
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Relativistic heavy ion collisions create a strongly coupled quark-gluon plasma. Some of the plasma's properties can be approximately understood in terms of a dual black hole. These properties include shear viscosity, thermalization time, and drag force on heavy quarks. They are hard to calculate from first principles in QCD. Extracting predictions about quark-gluon plasmas from dual black holes mostly involves solving Einstein's equations and classical string equations of motion. AdS/CFT provides a translation from gravitational calculations to gauge theory predictions. The gauge theory to which the predictions apply is N = 4 super-Yang-Mills theory. QCD is different in many respects from super-Yang-Mills, but it seems that its high temperature properties are similar enough for us to make some meaningful comparisons.
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