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Author Wiedemann, Urs Achim ♦ Floerchinger, Stefan
Source CERN Document Server
Content type Text
File Format PDF
Date Created 2011-06-28
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Modern physics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Nuclear Physics - Theory
Abstract We study the evolution of local event-by-event deviations from smooth average fluid dynamic fields, as they can arise in heavy ion collisions from the propagation of fluctuating initial conditions. Local fluctuations around Bjorken flow are found to be governed by non-linear equations whose solutions can be characterized qualitatively in terms of Reynolds numbers. Perturbations at different rapidities decouple quickly, and satisfy (after suitable coordinate transformations) an effectively two-dimensional Navier-Stokes equation of non-relativistic form. We discuss the conditions under which non-linearities in these equations cannot be neglected and turbulent behavior is expected to set in.
Description Presented at: J. Phys. G 38 (2011) 124171 22nd international conference on ultrarelativistic nucleus-nucleus collisions, Annecy, France, 23 - 28 May 2011, pp.124171
Learning Resource Type Article
Publisher Date 2011-01-01